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Condensed milk
View on Wikipedia| Place of origin | United States |
|---|---|
| Main ingredients | Milk, sugar |
Condensed milk is cow's milk from which water has been removed (roughly 60% of it). It is most often found with sugar added, in the form of sweetened condensed milk, to the extent that the terms "condensed milk" and "sweetened condensed milk" are often used interchangeably today.[1] Sweetened condensed milk is a very thick, sweet product, which when canned can last for years without refrigeration if not opened. The product is used in numerous dessert dishes in many countries.[2]
A related product is evaporated milk, which has undergone a lengthier preservation process because it is not sweetened.
History
[edit]
According to the writings of Marco Polo, in the thirteenth century the Tatars were able to condense milk. Marco Polo reported that ten pounds (4.5 kg) of milk paste was carried by each man, who would subsequently mix the product with water. However, this probably refers to the soft Tatar curd (qatiq), which can be made into a drink (ayran) by diluting it, and therefore refers to fermented, not fresh, milk concentrate.
Nicolas Appert condensed milk in France in 1820[3] and in 1835, English civil engineer William Newton added sugar as an additional measure of preservation.[4] Before these developments, milk could be kept fresh for only a short while and was available only in the immediate vicinity of a lactating cow. While returning to the United States from a trip to England in 1851, Gail Borden Jr. was devastated by the deaths of several children, apparently from poor milk obtained from shipboard cows. With less than a year of schooling and following a series of failures, both of his own and of others, Borden was inspired by the vacuum pan he had seen being used by Shakers to condense fruit juice and managed to reduce milk without scorching or curdling it.[5] Even then his first two factories failed[6] and only the third, built with new partner Jeremiah Milbank[7] in Wassaic, New York, produced a usable milk derivative that was long-lasting and needed no refrigeration.
Probably of equal importance for the future of milk production were Borden's requirements (the "Dairyman's Ten Commandments") for farmers who wanted to sell him raw milk: they were required to wash the cows' udders before milking, keep barns swept clean, and scald and dry their strainers morning and night. By 1858, Borden's milk, sold as Eagle Brand, had gained a reputation for purity, durability and economy.[8][9]
In 1864, Gail Borden's New York Condensed Milk Company constructed the New York Milk Condensery in Brewster, New York.[10] This was the largest and most advanced milk factory of its day and was Borden's first commercially successful plant. More than 200 dairy farmers supplied 20,000 US gallons (17,000 imperial gallons; 76,000 litres) of milk daily to the Brewster plant as demand increased driven by the American Civil War.
The U.S. government ordered huge amounts of condensed milk as a field ration for Union soldiers during the war. This was an extraordinary field ration for the nineteenth century: a typical 10-oz (300-ml) can contained 1,300 calories (5440 kJ), 1 oz (28 g) each of protein and fat, and more than 7 oz (200 g) of carbohydrate.
Soldiers returning home from the war soon spread the word, and by the late 1860s, condensed milk was a major product. In 1866, American brothers George Ham Page and Charles Page established the Anglo-Swiss Condensed Milk Company and opened the first condensed milk factory in Europe in the Swiss municipality of Cham.[11] The first Canadian condensery was built at Truro, Nova Scotia, in 1871.[12] In 1899, E. B. Stuart opened the first Pacific Coast Condensed Milk Company (later known as the Carnation Milk Products Company) plant in Kent, Washington. The condensed milk market developed into a bubble, with too many manufacturers chasing too little demand.[13] In the early 1900s, Carnation and Eagle brands were introduced in Hong Kong, establishing significant market shares in the years to follow.[14] In 1911, Nestlé constructed the world's largest condensed milk plant in Dennington, Victoria, Australia.[15] By 1912, high stocks of condensed milk led to a drop in price and many condenseries went out of business.

In 1914, Otto F. Hunziker, head of Purdue University's dairy department, self-published Condensed Milk and Milk Powder: Prepared for the Use of Milk Condenseries, Dairy Students and Pure Food Departments. This text, along with the additional work of Hunziker and others involved with the American Dairy Science Association, standardized and improved condensery operations in the United States and internationally. Hunziker's book was republished in a seventh edition in October 2007 by Cartwright Press.[16]
The First World War regenerated interest in, and the market for, condensed milk, primarily due to its storage and transportation benefits. In the U.S. the higher price for raw milk paid by condenseries created significant problems for the cheese industry.[17]
Production
[edit]Raw milk is clarified[18] and standardised to a desired fat to solid-not-fat (SNF) ratio,[19] and is then heated to 85–90 °C (185–194 °F) for several seconds. This heating process destroys some microorganisms, decreases fat separation and inhibits oxidation. Water is evaporated from the milk and sugar is added until a 9:11 ratio of sugar to (evaporated) milk is reached. The sugar extends the shelf life of sweetened condensed milk. Sucrose increases the liquid's osmotic pressure, which prevents microorganism growth. The sweetened evaporated milk is cooled and lactose crystallization is induced.[20]
Current use
[edit]This section needs additional citations for verification. (December 2018) |



Condensed milk is used in recipes for the Brazilian candy brigadeiro (where condensed milk is the main ingredient), key lime pie, caramel candies, and other desserts. Condensed milk and sweetened condensed milk are also sometimes used in combination with clotted cream to make fudge in certain countries such as the United Kingdom.
In parts of Asia and Europe, sweetened condensed milk is the preferred milk to be added to coffee or tea. Many countries in Southeast Asia, such as Vietnam and Cambodia, use condensed milk to flavor their hot or iced coffee. In Malaysia and Singapore, teh tarik is made from tea mixed with condensed milk, and condensed milk is an integral element in Hong Kong tea culture. In the Canary Islands, it is served as the bottom stripe in a glass of the local café cortado and, in Valencia, it is served as a café bombón. In Myanmar, condensed milk is an essential part of a vast majority of beverages such as coffee, milk tea and fruit juices along with the use of it as a sweetener in many desserts such as popsicles.
Borden's Eagle Brand sweetened condensed milk has noted that ice cream could be made quite simply at home with their product, cream, and various simple flavorings, being ready to serve after as little as four hours.[21]
In New Orleans, sweetened condensed milk is commonly used as a topping on chocolate or similarly cream-flavored snowballs. In Scotland, it is mixed with sugar and butter and then boiled to form a popular sweet candy called tablet or Swiss milk tablet, this recipe is very similar to another version of the Brazilian candy brigadeiro called branquinho. In some parts of the Southern United States, condensed milk is a key ingredient in lemon ice box pie, a sort of cream pie. In the Philippines, condensed milk is mixed with some evaporated milk and eggs, spooned into shallow metal containers over liquid caramelized sugar, and then steamed to make a stiffer and more filling version of crème caramel known as leche flan, also common in Brazil under the name pudim de leite.
In Mexico, sweetened condensed milk is one of the main ingredients of the cold cake dessert (the leading brand is "La Lechera", the local version of Swiss Milchmädchen or La Laitière by Nestlé), combined with evaporated milk, Marie biscuits, lemon juice, and tropical fruit. In Brazil, this recipe is also done by exchanging fruit for puddings, most commonly vanilla and chocolate, known as pavê or torta de bolacha. It is also used to make homemade dulce de leche by baking it in an oven. In Brazil, this is done by baking the unopened can in a bain-marie, the result being doce de leite. In Britain and Ireland, the contents of a boiled can are used as the layer between the biscuit base and the banana and cream level in banoffee. There is also a pastry-based tart that is popular in the county of Kent, England called Gypsy tart. The pastry case is then filled with a mixture of brown sugar and either condensed milk, evaporated milk, or a mixture of the two before being baked. In Latin American and Central American countries, condensed milk (along with evaporated milk and whole milk or canned cream) is used as a key ingredient in the tres leches cake dessert.
In Soviet culture, it was once common to boil a can of condensed milk in water for about three hours. The resulting product is a sweet semi-liquid substance that can be used as a cake icing or put between layers. It is essentially the same as dulce de leche. A similar product is called kajmak in Central Asia (although the original kaymak is a product similar to clotted cream).[22][23] In Russia it is called varionaya sguschyonka (translates as "boiled condensed milk"). The Soviet tradition and kaymak are also known in Poland.
Substitutions
[edit]Condensed milk can be made from evaporated milk by mixing by weight, for every 100 grams of evaporated milk, 82 grams of white sugar (for a condensed milk comprising 45% added sucrose) or 85 grams of white sugar (for approx 46% content of sucrose). The homemade preparation is heated gradually until sugar is fully dissolved then it is cooled and stored in a container.
See also
[edit]References
[edit]- ^ "Manufacture of Sweetened Condensed Milk". silverson.com. Silverson Machines. Retrieved 2019-10-17.
Sweetened condensed milk (SCM) is concentrated milk to which sugar has been added to act as a preservative. It differs from unsweetened evaporated milk, which is preserved by sterilization at high temperature after packaging. Typically, SCM contains around 8% fat, 45% sugar and 20% solids-non-fat. The finished product is mainly used in the manufacture of confectionery and chocolate.
- ^ Pearlman, Ann; Bayer, Mary Beth (2010). The Christmas Cookie Cookbook: All the Rules and Delicious Recipes to Start Your Own Holiday Cookie Club. Simon and Schuster. pp. 197–. ISBN 978-1-4391-7693-1.
- ^ Le livre de tous les ménages ou l'art de conserver. (Complete Book of Housework, or The Art of Preservation (in French), Paris, 1831, p. 82
- ^ "Specification of William Newton : preparing and preserving milk". Wellcome Collection. Retrieved 2024-10-26.
- ^ Becksvoort, Christian; Sheldon, John (1998-09-01). The Shaker Legacy: Perspectives on an Enduring Furniture Style. Newtown, CT: Taunton Press. p. 13. ISBN 978-1-56158-218-1.
- ^ Borden's gravestone epitath is "I tried and failed, I tried again and again and succeeded". Snodgrass, Mary Ellen (2004). Encyclopedia of Kitchen History. Routledge. p. 102. ISBN 978-1-135-45572-9.
- ^ Frantz, Joe B. (1951) Gail Borden: Dairyman To A Nation. University of Oklahoma Press
- ^ "Condensed Milk" (jpg). Nebraska State Journal. Lincoln, NE. 9 Sep 1907. p. 8. Retrieved 6 Aug 2017 – via Newspapers.com.
Prof. Hunziker of Purdue University gives the following interesting history of condensed milk: This year marks the 50th anniversary of the invention of the manufacture of condensed milk by Gail Borden. The first factory in the world was erected, completed and operated by Gail Borden in Connecticut in 1856. The beginning was small, the process crude and the product imperfect, and it was not until the strenuous years of the war of secession that its value and usefulness as a commodity became fully recognized.
- ^ Dudlicek, James (March 2008). "Renewed focus: a decade after its formation, DFA adjusts its outlook to secure the future for its member-owners". Dairy Foods. Retrieved 2008-06-26.
- ^ "New York Milk Condensery, Borden's Milk". Southeast Museum. Archived from the original on 2008-06-27. Retrieved 2008-06-26.
- ^ Inderbitzin, Monique. "Condensed milk – a snapshot of Swiss industrial history". inside.hochdorf.com. Retrieved 2024-10-26.
- ^ Bélanger, Claude (2005). "Dairying in Canada". L'Encyclopédie de l'histoire du Québec / The Quebec History Encyclopedia. Marianopolis College. Retrieved 2008-06-26.
- ^ "Condensed Milk" (jpg). Nebraska State Journal. Lincoln, NE. 9 Sep 1907. p. 8. Retrieved 6 Aug 2017 – via Newspapers.com.
According to the United States census of 1900, in that year there were over fifty factories in the United States. The increase in condensories during the last five years has been so rapid that it is safe to put the total number of factories today at 100 in this country alone. The census report of 1903 estimates that about 1,000,000,000 pounds of milk were received at our condensories with an aggregate output of 250,000,000 pounds of condensed milk in that year.
- ^ "Live Long and Prosper: Longevity Condensed Milk (壽星公煉奶), Black and White Evaporated Milk (黑白淡奶) and Friesland Ice Cream (菲仕蘭雪糕 – The Industrial History of Hong Kong Group". industrialhistoryhk.org. Retrieved 2024-10-26.
- ^ "Historical timeline" (PDF). Société des Produits Nestlé SA. Archived from the original (PDF) on September 5, 2007. Retrieved 2008-06-26.
1911 Dennington Condensed Milk factory built (largest in the world during the war).
- ^ Hunziker, O. F. (1914) [1914]. Condensed milk and milk powder: prepared for the use of milk condenseries, dairy students and pure food departments. LaGrange, IL. ISBN 978-1-4067-8266-0.
{{cite book}}: ISBN / Date incompatibility (help)CS1 maint: location missing publisher (link) 2nd Ed. (LaGrange, IL: 1918), [1] (LaGrange, IL: 1920), alternative 3rd Ed - ^ Pauly, William H (1918). "Condensery competition with factories". Proceedings of the Wisconsin Cheese Makers' Association Annual Conventions 1916-17-18: 155–165. Retrieved 2008-06-26.
- ^ https://books.lib.uoguelph.ca/dairyscienceandtechnologyebook/chapter/clarification-and-cream-separation/
- ^ Sharma, Prateek; Patel, Hasmukh; Patel, Ashok (2015). "13. Evaporated and Sweetened Condensed Milks". In Chandan, Ramesh C.; Kilara, Arun; Shah, Nagendra P. (eds.). Dairy Processing and Quality Assurance. John Wiley & Sons, Ltd. pp. 310–332. doi:10.1002/9781118810279.ch13. ISBN 9781118810279.
- ^ Goff, Doug (1995). "Concentrated and Dried Dairy Products". Dairy Science and Technology Education Series. University of Guelph, Canada. Archived from the original on 2008-06-11. Retrieved 2008-06-26.
- ^ Walker, Judy, Make New Orleans flavored ice cream without a fancy machine, Nola.com, August 5, 2010
- ^ "Why Russians boil sweetened condensed milk". rbth.com. Retrieved 2020-01-22.
- ^ "10 yummies that all Soviet children adored | Educa Russian Language Center". educalanguageschool.com. 2017-11-16. Retrieved 2020-01-22.
External links
[edit]
Media related to Condensed milk at Wikimedia Commons
Condensed milk
View on GrokipediaOverview and Types
Definition and Composition
Condensed milk is a dairy product derived from cow's milk by partially removing water through evaporation, resulting in a thick, concentrated liquid. It encompasses two primary varieties: sweetened condensed milk, which includes added nutritive carbohydrate sweeteners such as sugar to enhance preservation and flavor, and unsweetened condensed milk, commonly known as evaporated milk, which relies on concentration and sterilization for stability without added sugars. This process typically removes approximately 60% of the water content from fresh milk, concentrating the natural components while maintaining the whey protein to casein ratio unless adjusted with milk constituents.[6][1][7] The basic composition of condensed milk varies between its sweetened and unsweetened forms. Evaporated milk typically features about 74% water content, with the remainder consisting of milkfat, proteins, and lactose. It must contain at least 6.5% milkfat and 23% total milk solids by weight, including a minimum of 16.5% milk solids-not-fat, providing a rich profile of approximately 7-9% fat, 7-9% protein, and 10-12% lactose. Sweetened condensed milk has about 27% water content, requiring a minimum of 8% milkfat and 28% total milk solids, with typical formulations including 8-10% milkfat, 8-10% protein, 40-45% added sugar, and the balance as concentrated milk components, which collectively lower the water activity to inhibit microbial growth. These proportions ensure a nutrient-dense product that retains essential dairy elements like casein and whey proteins in heightened concentrations compared to fresh milk.[7][1][8][9][10] Physically, evaporated milk exhibits a viscous, creamy, pourable texture attributable to the evaporation process, which increases the density and intermolecular interactions among proteins and fats. Sweetened condensed milk, in contrast, has a thicker, syrupy texture due to the added sugars. When canned, evaporated milk is preserved through heat sterilization, achieving extended shelf stability lasting up to two years unopened, while sweetened condensed milk is preserved by the high sugar content and can remain stable indefinitely at room temperature without further sterilization. However, upon prolonged heating, such as in culinary applications, sweetened condensed milk is particularly prone to caramelization through Maillard reactions and sugar browning, producing a golden color and enhanced flavor but potentially leading to thickening or crystallization if overheated.[11][12][13][12] Legal standardization ensures consistency and safety, with regulatory bodies like the U.S. Food and Drug Administration (FDA) defining minimum solids and fat levels for proper labeling as condensed or evaporated milk, preventing misbranding and guaranteeing quality. For instance, FDA regulations under 21 CFR 131.120 and 131.130 mandate specific compositional thresholds and pasteurization to meet these standards, while international guidelines from the Codex Alimentarius provide similar minima, such as 7.5% milkfat and 25% total solids for evaporated milk equivalents. These definitions prohibit the addition of non-milk fats or excessive fillers, preserving the product's integrity as a concentrated dairy form.[1][7][14]Sweetened vs. Evaporated Milk
Sweetened condensed milk and evaporated milk represent the two main variants of condensed milk products, both derived from fresh cow's milk with approximately 60% of the water removed to achieve concentration. Sweetened condensed milk is produced by evaporating whole milk under vacuum to preserve flavor, followed by the addition of sugar at 40-45% by weight, which not only imparts sweetness but also serves as a primary preservative by creating a high-sugar environment that inhibits microbial growth.[15] In contrast, evaporated milk is unsweetened, involving the partial removal of water from milk to create a double concentration, after which it is homogenized to ensure even fat distribution and then subjected to heat sterilization in sealed cans to eliminate pathogens and extend shelf life.[16] The key differences between these products lie in their composition and preservation methods, which directly influence their uses and longevity. Sweetened condensed milk contains about 28.5% total milk solids, 8.5% milk fat, and 42% sugar, resulting in a thick, syrupy texture ideal for sweet applications like desserts and beverages where added sweetness is desired. Evaporated milk, however, adheres to standards of at least 6.5% milk fat and 16.5% total milk solids with no added sugars, providing a neutral, creamy profile suitable for versatile savory or general cooking purposes, such as in soups, sauces, or as a fresh milk substitute when diluted. Regarding shelf life, unopened sweetened condensed milk can remain stable indefinitely at room temperature due to the preservative effect of sugar, requiring no post-sealing sterilization, whereas unopened evaporated milk typically lasts 1-2 years under similar conditions, thanks to the sterilization process, though flavor may degrade after six months.[17][18][19] Regional naming conventions can add confusion to these distinctions. In the United States, "condensed milk" commonly refers specifically to the sweetened variety, while "evaporated milk" denotes the unsweetened type; however, in some other countries, evaporated milk is known as "unsweetened condensed milk," leading to potential mix-ups in international contexts.[15][20]History
Invention and Early Development
Early methods of milk preservation date back to ancient civilizations, where boiling milk to reduce its water content was practiced in regions such as India to create khoya, a concentrated dairy product formed through thermal desiccation at atmospheric pressure.[21] Similar techniques involving boiling and concentration were employed in the Middle East for producing thickened milk products, though these were primarily for local consumption and lacked the scalability of later innovations.[22] Modern condensed milk, however, emerged in 19th-century Europe through pre-commercial experiments aimed at longer-term preservation. In France, Nicolas Appert conducted pioneering work on food preservation in the early 1800s, developing a canning method that included sealing heated dairy products, such as milk, in airtight glass containers to prevent spoilage; he received official recognition for this process in 1810.[23] Appert's approach focused on thermal processing rather than evaporation, but it laid groundwork for vacuum-based techniques by demonstrating the viability of sealed preservation for liquids like milk.[24] The development of condensed milk as a distinct product is credited to American inventor Gail Borden Jr., who was motivated by the rapid spoilage of fresh milk during long sea voyages, particularly after witnessing infants fall ill on a return trip from England in 1851 due to contaminated or unavailable supplies.[25] Borden sought to create a stable alternative by evaporating milk under vacuum to remove water while retaining nutrients, applying for a U.S. patent on this process in 1853; the patent was initially rejected for lack of novelty but granted in 1856 as U.S. Patent No. 15,553 after refinements, including the addition of sugar to inhibit bacterial growth.[26] Early prototypes faced significant challenges, as unsealed or insufficiently sweetened batches remained prone to spoilage despite vacuum evaporation.[27] Borden's breakthrough came with a successful 1856 trial shipment of his sweetened condensed milk aboard a ship to England, where it arrived unspoiled and demonstrated the method's potential for safe transport over extended periods.[28] This experiment validated the vacuum evaporation technique for preserving milk's quality during maritime journeys, addressing a critical need in an era without widespread refrigeration.[29]Commercialization and Global Spread
Gail Borden founded the New York Condensed Milk Company in 1857, marking the beginning of commercial production of condensed milk in the United States. The company's first factory opened in Wassaic, New York, in 1861, enabling large-scale manufacturing. Sales experienced a significant boom during the U.S. Civil War (1861–1865), as the Union Army contracted for vast quantities of condensed milk as a portable and non-perishable ration for soldiers, with demand exceeding the factory's initial output capacity.[30][2] In 1866, the Anglo-Swiss Condensed Milk Company established Europe's first condensed milk factory in Cham, Switzerland, founded by American brothers George and Charles Page. In 1867, pharmacist Henri Nestlé developed an infant formula known as Farine Lactée, made from cow's milk, wheat flour, and sugar, which he began marketing as a nutritious alternative for babies unable to be breastfed. By the early 1870s, Nestlé had launched its own production of condensed milk, positioning the company as a direct competitor to Anglo-Swiss, and expanded sales across Europe, including to the United Kingdom and German Empire, while entering the U.S. market through exports and partnerships.[31][32] The global spread of condensed milk accelerated in the late 19th and early 20th centuries, particularly through colonial trade routes. In Asia, it was introduced during American colonization of the Philippines following the Spanish-American War in 1898, where canned condensed milk became a staple import for U.S. military personnel and colonial elites, eventually integrating into local cuisine despite initial hygiene concerns about native foods. By the 1900s, production peaked in major markets, with companies like Borden and Nestlé establishing factories and brands in East Asia, capturing significant shares through targeted advertising. During World War I and II, demand surged globally as militaries relied on condensed milk for its shelf stability and caloric density in rations, further embedding it in supply chains worldwide.[33][34] In the 20th century, condensed milk was heavily marketed in developing regions as a safe, long-life alternative to fresh milk, which was often prone to contamination in areas lacking refrigeration. This positioning drove adoption in tropical climates across Asia, Africa, and Latin America, where it served as an accessible protein source. Corporate milestones included the 1905 merger of Nestlé and Anglo-Swiss, forming Nestlé and Anglo-Swiss Condensed Milk Company, which dominated international trade. Borden, meanwhile, underwent significant restructuring; by the 2000s, its dairy operations were sold amid industry consolidation, with the Borden Dairy Company established in 2009 under new ownership by Grupo Lala following bankruptcy proceedings.[35][36]Production
Manufacturing Process
The manufacturing process of condensed milk begins with raw material preparation, where fresh cow's milk—or occasionally alternatives such as goat's milk—is selected for its bacteriological quality to minimize spore and bacterial contamination. The milk is first pasteurized, typically at temperatures around 72–95°C for 15–30 seconds using high-temperature short-time (HTST) methods, to eliminate pathogens while preserving quality. Standardization follows, adjusting the fat content to approximately 8% and ensuring total solids meet regulatory minima, such as 28% for sweetened varieties under American standards, through the addition or removal of cream or skim milk.[37][38] Evaporation is the core step, conducted in multi-effect falling-film evaporators under vacuum to remove 50–60% of the water content efficiently while maintaining low temperatures of 65–70°C, preventing scorching and protein denaturation. This vacuum pan method concentrates the milk to about twice its original solids level, with pre-heating at 100–120°C for 1–3 minutes often applied beforehand to enhance thermal stability via partial whey protein denaturation. For sweetened condensed milk, cane or beet sugar syrup is added during or after evaporation, achieving a sugar concentration of 62.5–64.5% in the water phase to act as a preservative; the mixture is then homogenized at 5–7.5 MPa (50–75 bar) to stabilize the emulsion and control viscosity, followed by rapid cooling to 18–30°C with lactose seeding to promote fine crystal formation (<10 μm) and prevent grittiness.[37][38] In contrast, for evaporated (unsweetened) condensed milk, homogenization occurs post-evaporation at higher pressures of 5–25 MPa (50–250 bar) to prevent fat separation, after which the product is filled into sterile cans or pouches. Sterilization is then performed in an autoclave at 110–120°C for 15–20 minutes to achieve commercial sterility, ensuring a shelf-stable product without added sugar. Packaging for both types typically involves hermetic sealing in metal cans or flexible aseptic pouches under sanitary conditions to exclude air and contaminants; the process yields approximately 300 ml of condensed milk from 1 liter of raw milk due to the significant water removal.[37]Quality Control and Variations
Quality control in condensed milk production involves rigorous testing to ensure compliance with international standards, such as those outlined by the Codex Alimentarius Commission. For sweetened condensed milk, key parameters include a minimum total solids content of 73%, with milk solids-not-fat at least 28% and milk fat at least 8%, to guarantee proper consistency and shelf stability. Viscosity is monitored to fall within approximately 560 to 800 mPa·s (or centipoise), which affects pourability and product uniformity during packaging. Bacterial load is assessed post-sterilization, with standards requiring less than 500 colony-forming units (CFU) per gram via aerobic plate counts to prevent spoilage.[39][40][41][42] Control measures emphasize pH monitoring, typically maintained between 6.0 and 6.5 during processing to optimize stability and inhibit microbial growth without promoting unwanted reactions. Microbial testing employs standard plate count methods for both aerobic and anaerobic bacteria, alongside checks for osmophilic fungi and pathogens like Bacillus cereus. Hazard Analysis and Critical Control Points (HACCP) protocols are integral, focusing on preventing contamination at critical stages such as raw milk reception, evaporation, and sterilization, through sanitation, temperature controls, and employee hygiene to minimize cross-contamination risks.[39][42][43] Variations in condensed milk production adapt to diverse consumer needs and regional preferences. Non-cow milk sources, such as soy or almond, are used in vegan formulations, where plant-based milks are evaporated and sweetened to mimic traditional texture and flavor; plant-based versions have increased in popularity since 2020 for vegan and lactose-intolerant consumers.[44][45] Low-fat options, like sweetened condensed skimmed milk with a maximum of 1% milk fat, cater to health-conscious markets, while organic lines utilize certified organic milk to meet sustainability demands. Regional adaptations reflect high consumption of sweetened condensed milk in Asian markets, such as Indonesia and Malaysia, where it enhances palatability for local beverages and desserts.[40][46] Production challenges center on controlling the Maillard reaction, a non-enzymatic browning process between milk proteins and sugars that can alter color and flavor if not managed through time-limited exposure at elevated temperatures during processing and low temperatures below 55°C during storage. Shelf-life testing evaluates stability under varying temperatures, from 7°C for refrigerated conditions to 55°C for accelerated simulations; for UHT-treated evaporated condensed milk, products maintain quality for 6-9 months by monitoring browning kinetics and microbial stability, while sweetened varieties achieve 12+ months unopened via sugar preservation.[47][48][49]Nutritional Profile
Key Nutrients and Calories
Condensed milk, available in sweetened and evaporated varieties, provides a concentrated source of macronutrients due to the removal of about 60% of the water from fresh milk. Per 100 grams, sweetened condensed milk contains approximately 321 calories, 8 grams of protein, 8 grams of total fat, and 55 grams of carbohydrates, with the majority of the carbohydrates (around 54 grams) coming from added sugars. In contrast, evaporated milk is unsweetened and less calorie-dense, offering about 134 calories, 7 grams of protein, 7 grams of total fat, and 10 grams of carbohydrates per 100 grams, primarily from natural milk sugars like lactose.[50][51] The following table summarizes key macronutrients per 100 grams for both types, based on USDA data:| Nutrient | Sweetened Condensed Milk | Evaporated Milk |
|---|---|---|
| Calories (kcal) | 321 | 134 |
| Protein (g) | 8 | 7 |
| Total Fat (g) | 8 | 7 |
| Carbohydrates (g) | 55 (54g sugars) | 10 (10g sugars) |
| Dietary Fiber (g) | 0 | 0 |
