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Cranberry bean
Cranberry bean
from Wikipedia
Cranberry bean
SpeciesPhaseolus vulgaris
Marketing namesBorlotti bean, cranberry bean, Roman bean, saluggia bean and rosecoco bean
OriginNorth and South America
Borlotti beans, raw
Fresh borlotti beans
Nutritional value per 100 g (3.5 oz)
Energy1,458 kJ (348 kcal)
60.05 g
Sugars2.4 g
Dietary fiber24.7 g
1.23 g
Saturated0.244 g
23.03 g
Vitamins and minerals
MineralsQuantity
%DV
Sodium
0%
6 mg
Percentages estimated using US recommendations for adults.[1]

The cranberry bean is a variety of common bean (Phaseolus vulgaris) first bred in Colombia as the cargamanto.[2] It is also known as the borlotti bean, Roman bean, romano bean (not to be confused with the Italian flat bean, a green bean also called "romano bean"), saluggia bean, gadhra bean or rosecoco bean.[3] The bean is a medium to large tan or hazelnut-colored bean splashed or streaked with red, magenta or black.

Saluggia beans are regional, a borlotti bean named after Saluggia in northern Italy for marketing purposes and where they have been grown since the early 1900s.[4]

Characteristics

[edit]

The borlotti bean is a variety of the cranberry bean bred in Italy to have a thicker skin. It is used in Italian, Portuguese (called the Catarino bean), Turkish, and Greek cuisine.

The cranberry bean looks similar to the pinto bean, but cranberry beans are larger and have big maroon, magenta, or black specks on a creamy white background, more like Great Northern beans. After cooking, however, the specks vanish and the beans take on a more even, darker color.

(a) three raw borlotti beans.
(b) the same three borlotti beans, but cooked.

A new cranberry bean variety, 'Crimson', is light tan speckled with maroon. It is resistant to viruses and has a high yield.[5]

'Crimson' is a new cranberry dry bean.

Cultivars

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  • Borlotto Lingua di Fuoco (Tongue of Fire), 60 days, bush, heirloom

References

[edit]
Revisions and contributorsEdit on WikipediaRead on Wikipedia
from Grokipedia
The cranberry bean () is a of the common bean, an annual in the family, characterized by its trailing vines up to 6 feet long, trifoliate leaves, and pale green pods with distinctive red or purple marbling that contain 5–6 oval, cream-colored seeds speckled with bold red mottling. Native to Central and , where the common bean originated, the cranberry bean variety is thought to have been first bred in as the cargamanto, with introductions to occurring in the via Spanish explorers and to around 1825 from . It is also widely known by regional names such as borlotti in , tongues of fire, or Wren's egg, reflecting its global cultivation and adaptation. As a versatile crop, cranberry beans can grow as or pole types, thriving in full sun with at least 6–8 hours of direct daily and in fertile, well-drained with a of 5.8–7.0, where they fix atmospheric to enrich the . They prefer warm temperatures between 65–85°F (18–29°C) and are frost-sensitive, with seeds sown directly after the last spring frost, maturing in 75–90 days for fresh shelling or longer for dry harvest when pods turn brown. In regions like the and , varieties such as Vermont Cranberry or Bellagio are bred for upright vines, disease resistance, and high yields in dry production, often interplanted with corn for support. Cranberry beans are prized for culinary uses, harvested fresh in late summer for shelling or dried for storage, offering a creamy texture and nutty, earthy flavor ideal for soups, stews, and Italian dishes like . Nutritionally, the dried beans provide about 140 calories per 100g, with 9g of protein, 9g of fiber, and antioxidants that support , , and as a plant-based staple. Their dual role as a food crop and improver has sustained their popularity in home gardens and commercial farming across temperate climates worldwide.

Taxonomy

Botanical classification

The cranberry bean is a of the common bean, Phaseolus vulgaris L., classified in the kingdom Plantae, Tracheophyta, class Magnoliopsida, order , family (Leguminosae), subfamily , tribe , and subtribe Phaseolinae. This placement situates it among the , characterized by nitrogen-fixing root nodules and pod fruits, with comprising about 55 species primarily native to the . Within P. vulgaris, the cranberry bean is distinguished as a shelling cultivar that can exhibit either pole (vining) or bush (determinate) growth habits, depending on the variety, such as the pole-type 'Borlotti' or bush-type 'Vermont Cranberry'. Its genetic lineage traces to in the Andean region of approximately 8,000–10,000 years ago, part of the larger Andean of common beans, which is differentiated from the Mesoamerican pool by larger size, phaseolin storage protein types (e.g., A and B), and specific molecular markers like those at the SAP6 locus for assignment. Varietal markers unique to speckled red types, including the cranberry bean, involve alleles at seed coat color loci such as the P (pigment) gene on (linkage group Pv07), which regulates production for the characteristic red mottling on a cream background, often in combination with pattern genes like Z and R for the speckled effect. The etymological origin of "cranberry bean" derives from the vivid cranberry-red mottling on the fresh pods, which resemble the fruit of the unrelated species, with the term first documented in North American horticultural records for these imported Andean varieties.

Common names and synonyms

The cranberry bean (), a variety of the common bean, is recognized by numerous synonyms that highlight its distinctive appearance and cultural significance across regions. Primary synonyms include the borlotti bean, Roman bean, saluggia bean, and shell bean, often used interchangeably in culinary and agricultural contexts due to their shared characteristics of mottled seeds and edible pods. The name "cranberry bean" originates from the striking red streaks and mottling on its immature pods, which evoke the color of cranberries, while in the U.S. South, it is commonly known as the "October bean" because of its harvest timing in late summer or early autumn. In Italy, where it holds a prominent place in traditional cuisine, it is called "fagiolo romano," reflecting its association with Roman horticultural varieties. Historically, 19th-century American agricultural and trade texts frequently referred to it as the "speckled bean" or "red speckled bean," emphasizing the marbled pattern on the dried seeds, a nomenclature that has largely shifted to more standardized commercial labels in modern usage. This bean is occasionally confused with similar-looking varieties like pinto or kidney beans owing to overlapping speckled appearances, but it maintains a distinct varietal identity through its larger seed size, oval shape, and tendency for the red markings to fade to a uniform cream color when cooked.

Description

Plant morphology

The cranberry bean (Phaseolus vulgaris L.), a cultivar of the common bean, exhibits diverse growth forms depending on the variety. Pole types are indeterminate climbers with twining vines that can reach 2–3 meters (6–10 feet) in height, requiring support for optimal development, while bush varieties are determinate or semi-determinate, forming compact plants 0.5–1 meter (2–3 feet) tall without trellising. The stems are herbaceous, angular to nearly cylindrical, and pubescent, particularly on younger growth, with diameters up to 1.5 cm in vigorous forms; they support the habit through twining. The consists of a shallow with extensive lateral roots primarily in the top 15 cm of soil, featuring nitrogen-fixing nodules formed in with bacteria, enhancing . Leaves are alternate and trifoliate, borne on petioles up to 15 cm long, with ovate to ovate-lanceolate leaflets measuring 7.5–15 cm in length and 5–10 cm in width; the leaflets are green, often with pubescence, and asymmetrical at the base for lateral ones. Flowering occurs in summer on axillary or terminal racemes, producing small, self-pollinating papilionaceous flowers that are typically white or lilac, with a coiled and spiraled style.

Pod and seed characteristics

The pods of the cranberry bean (Phaseolus vulgaris) are typically flattened and measure 5 to 6 inches in length, starting out green when immature and developing red mottling that intensifies into prominent cranberry-like streaks and speckles as they mature. The seeds are oval to kidney-shaped, approximately 0.5 to 0.75 inches long, with a cream-white base featuring bold red-brown marbling or mottling; on a dry weight basis, they contain around 20-25% protein. During maturation, the pods remain inedible but allow for the harvest of tender seeds as fresh shell beans when still immature and plump; as the pods dry and become fibrous, the seeds harden, enabling long-term dry storage.

Cultivation

Growing conditions

Cranberry beans () are a warm-season that thrives in temperate climates, where they can be grown as annuals. They are highly frost-sensitive and require soil temperatures consistently above 60°F (15.6°C) for optimal , typically achieved in or early summer depending on the region. The ideal growing temperature range is 65–75°F (18–24°C), with performance declining under prolonged heat above 85°F or cool nights below 50°F. These beans prefer well-drained, loamy soils with a between 6.0 and 7.0 to support healthy development and uptake. They tolerate moderate levels thanks to their ability to fix atmospheric through in nodules, reducing the need for heavy fertilization in non-irrigated fields. Heavy clay or poorly drained soils should be avoided, as they increase the risk of ; incorporating can improve drainage in sandy loams. For planting, sow seeds 1–2 inches deep in full sun, which provides at least 6–8 hours of direct sunlight daily to promote vigorous growth and pod set. Bush varieties should be spaced 4–6 inches apart within rows 18–24 inches wide, while pole varieties require 8–12 inches between plants and support structures like trellises, with rows 3–4 feet apart to allow for vining. Inoculate seeds with rhizobia bacteria if soils lack native populations to enhance nitrogen fixation. Cranberry beans require moderate , approximately 1 per week during active growth, applied deeply to encourage expansion while avoiding overhead watering that promotes foliar diseases. They exhibit some resistance to bean leaf beetles through varietal selection and cultural practices like , but remain vulnerable to anthracnose ( lindemuthianum), which can be managed with certified disease-free seed, applications during humid conditions, and 2–3 year rotations away from other s. Monitoring for Mexican bean beetles is essential, as larvae can defoliate plants; includes handpicking or targeted insecticides if thresholds are exceeded.

Harvesting and storage

Cranberry beans, also known as borlotti or Roman beans, are harvested at two primary stages depending on intended use: fresh shelling or dry storage. For fresh shelling, beans are typically ready 60 to 75 days after planting, when pods are plump and filled with soft, tender seeds that have developed their characteristic red-speckled pattern but are not yet fully mature. At this stage, the pods remain green and snap easily, allowing for immediate shelling and consumption without further drying. For dry harvest, plants are left to mature further, reaching 90 to 100 days, at which point 80% or more of the pods have yellowed and dried, with hard seeds inside that rattle when shaken. This maturation aligns with the R9 growth stage common to dry beans, ensuring optimal seed quality. Harvesting techniques vary by scale. In small-scale or home gardens, hand-picking is preferred to select individual pods at the desired maturity, minimizing damage and allowing staggered harvests over several weeks as pods ripen unevenly. Commercial operations often employ mechanical methods, such as direct combining when 80% of pods are ripe, to efficiently gather the while reducing seed loss to 1-5% through proper adjustments like reel speed and cylinder clearance. Yields average 1-2 ounces of dry beans per plant under optimal conditions, though this can vary with variety, spacing, and environment; for instance, bush varieties like Vermont Cranberry produce heavily from compact plants. Post-harvest processing involves to separate seeds from pods, either by hand-rubbing for small quantities or using stationary threshers for larger volumes, followed by to remove . Seeds are then dried to 12-14% content to prevent spoilage, often spread in thin layers in well-ventilated areas or using low-temperature systems. For storage, dried cranberry beans should be kept in cool, dry conditions below 70°F (21°C) and 60% relative , ideally in airtight containers such as jars or vacuum-sealed bags, which can preserve for 1-2 years. This method effectively prevents infestation by limiting oxygen and access to potential pests like the ().

Culinary uses

Preparation methods

Cranberry beans can be prepared fresh from immature pods or as dried beans, each requiring distinct methods to achieve optimal texture and flavor. For fresh use, the beans are first shelled from their pods, a process that yields tender, creamy seeds suitable for quick cooking. To inactivate enzymes, prevent oxidation, and prepare for freezing or further cooking, the shelled beans are blanched in boiling water for 2 to 3 minutes before being plunged into an ; this step also partially cooks them, reducing subsequent simmering time to about 20 to 30 minutes until tender. The beans' red mottling fades during cooking, resulting in a creamy appearance. Dried cranberry beans, which have a longer , require rehydration before cooking to ensure even tenderness and reduce cooking duration. The standard method involves soaking 1 cup of beans in 3 cups of overnight for 12 to 18 hours in the , followed by draining and rinsing. The soaked beans are then boiled in fresh using the same 3:1 ratio, for 45 to 60 minutes until soft; alternatively, pressure cooking for 20 to at yields similar results without prior soaking, though monitoring for tenderness is advised. To enhance flavor during cooking, aromatic ingredients such as , onions, or herbs like and bay leaves are commonly added to the pot after the initial boil, infusing the beans without overpowering their nutty taste. Acidic elements, including tomatoes or , should be incorporated only after the beans are fully tender, as early addition can toughen the skins and prolong cooking time. For preservation, blanched fresh cranberry beans can be frozen by spreading them on a to freeze individually before transferring to airtight bags, maintaining quality for up to 8 to 12 months. procedures differ for fresh and dried beans. For rehydrated dried beans, after soaking and simmering for 30 minutes, pack hot into jars with , leaving 1-inch headspace, and process in a canner: for weighted-gauge at 0–1,000 ft, 10 psi for 75 minutes (pints) or 90 minutes (quarts); adjust for altitude, dial-gauge (11 psi at 0–2,000 ft), or per USDA guidelines. For fresh shelled beans, use hot pack by bringing beans to a in , then pack loosely into jars with (1-inch headspace for pints, 1–1.5 inches for quarts), and process: 40 minutes (pints) or 50 minutes (quarts) at the same s.

Regional dishes

In , cranberry beans, known locally as borlotti, are integral to traditional soups like , where they are simmered with short pasta, tomatoes, garlic, onions, and often or to create a robust, comforting . These beans' creamy texture and nutty flavor also enhance , a vegetable-laden typically including carrots, , , and tomatoes, providing a hearty base that balances the medley of seasonal produce. In American Southern dishes, cranberry beans serve as a versatile substitute for beans in , a classic side that pairs the beans' mild earthiness with fresh corn kernels, often enriched with or and seasoned with for a simple yet flavorful harvest celebration. They are likewise featured in , slow-cooked with , onions, and sometimes to yield a sweet-savory accompaniment to barbecues and holiday meals. Latin American preparations highlight cranberry beans in hearty stews and fresh applications, such as the Chilean porotos granados, a summer dish combining the beans with corn, , onions, and for a vibrant, basil-infused medley that showcases regional produce. In , these beans adapt traditional frijoles pintos recipes, like frijoles de la olla, where they are pot-cooked with onions, garlic, and minimal seasoning to develop a brothy, flavorful pot essential for tacos or dishes. Fresh shelled cranberry beans also appear in light salads, tossed with tomatoes, corn, and lime vinaigrette to emphasize their tender texture in everyday meals. Modern fusions incorporate cranberry beans into innovative vegan dishes, such as patties where the beans are mashed with sweet potatoes, beets, , and walnuts, then formed and grilled for a protein-packed burger alternative in plant-based menus. In settings, they feature in seasonal salads with fresh herbs, or vegan alternatives, and light dressings, celebrating the beans' short fresh harvest window in contemporary, sustainable cuisine.

Nutritional profile

Macronutrients

Cranberry beans, in their dry form, provide approximately 335 kcal per 100 grams, with the majority of derived from , totaling 60 g, of which 24.7 g are . This high carbohydrate content positions them as a dense source suitable for plant-based diets, while the substantial contributes to their role in digestive health without delving into specific benefits. The protein content is notable at 23 g per 100 grams, featuring a complete profile that includes all essential , with particularly high levels of at 1.98 g per 100 grams. This makes cranberry beans a valuable protein contributor among , though typically complemented with grains for optimal balance. Fats are present in low amounts, at 1.23 g per 100 grams, predominantly unsaturated fatty acids, with saturated fats comprising only 0.16 g. In comparison to other common beans, cranberry beans exhibit similar dietary fiber content to navy beans (24.7 g versus 24.4 g per 100 g dry) but have a similar protein level to black beans (23 g versus 21.6 g per 100 g dry).
Nutrient (per 100g dry)Cranberry BeansNavy BeansBlack Beans
Calories (kcal)335337341
Protein (g)2322.321.6
Total Fat (g)1.231.51.4
Carbohydrates (g)6060.862.4
Fiber (g)24.724.415.5

Micronutrients and health benefits

Cranberry beans provide a range of essential micronutrients, particularly minerals and vitamins that contribute to overall health. Per 100 grams of raw seeds, they contain approximately 5.1 mg of iron, which supports oxygen transport in the blood; 604 μg of , vital for and red blood cell formation; 156 mg of magnesium, involved in muscle and function as well as energy production; 1332 mg of , important for heart health and muscle function; and 407 mg of , supporting bone health. These beans also offer vitamins such as thiamin at 0.75 mg per 100 grams, which aids in carbohydrate metabolism, and at 19 μg per 100 grams, supporting blood clotting and bone health. The distinctive red speckles on cranberry bean seeds are attributed to anthocyanins, a class of antioxidants, along with other polyphenols that exhibit free radical-scavenging properties. These bioactive compounds contribute to the beans' potential protective effects against . Incorporating cranberry beans into the diet can support digestive health through their soluble fiber content, which promotes regular bowel movements and may help maintain balance. The iron content aids in preventing by facilitating production, particularly beneficial for populations at risk such as vegetarians. Additionally, the polyphenols in cranberry beans have demonstrated potential effects in cellular studies, possibly reducing markers of chronic inflammation. However, the bioavailability of minerals like iron and magnesium can be limited by phytic acid, an present in raw beans that binds to minerals in the digestive tract. Soaking the beans prior to cooking significantly reduces phytic acid levels, thereby enhancing mineral absorption.

History and cultural significance

Origins

The cranberry bean (Phaseolus vulgaris var. cargamanto), a known for its speckled red-and-white seed coat and cranberry-like pod markings, traces its origins to the Andean domestication of the common bean in . The wild progenitor of P. vulgaris migrated from to the Andes around 10,000 years ago, where it underwent independent approximately 7,000–9,000 years ago by indigenous Andean peoples, leading to the development of diverse landraces including those with distinctive color patterns like the cranberry bean. Archaeological evidence supports early cultivation in the Andean region, with the oldest traces of domesticated beans appearing as grains on teeth from the Ñanchoc Valley in northern , dated to 8,210–6,970 calibrated years (approximately 6,210–4,970 BCE). Additional finds from Guitarrero Cave in the Peruvian highlands include bean dated to around 4,300 uncalibrated years (about 5,000 calibrated years ago), indicating initial selection for pod and seed traits, including speckled varieties valued for their aesthetic and nutritional qualities. These early selections occurred as indigenous groups intercropped beans with and other crops, adapting them to high-altitude environments. Prior to European contact, the cranberry bean and related landraces spread widely across Central and northern , particularly in the Andean highlands of , where the cargamanto variety emerged as a dietary staple among pre-Columbian societies such as the , providing protein alongside . The Andean gene pool of P. vulgaris exhibits higher compared to the Mesoamerican pool, particularly in seed coat color traits, which facilitated the evolution of diverse patterns like the mottled red speckling characteristic of cranberry beans through natural and targeted selection by indigenous farmers. This diversity is evident in modern landraces, reflecting millennia of pre-Columbian breeding for both ornamental and adaptive purposes.

Spread and modern cultivation

The cranberry bean (Phaseolus vulgaris), originating as the cargamanto variety in , spread to through Spanish explorers during the 15th and 16th centuries, facilitated by the . From there, it became established in around 1500, where it is known as borlotti and has been cultivated extensively ever since for its culinary versatility. In the Americas, the bean reached the by the mid-19th century, possibly via introductions from (similar to the Araucano variety) or earlier from around 1825, and it gained prominence among Indigenous groups like the in the Northeast. Global dissemination continued through trade routes and colonial migration, leading to regional adaptations such as the Madeira bean in and Tongues of Fire in . Today, cranberry beans are cultivated in diverse regions, with significant production in for fresh and dried markets, and in the United States, where leads as the top producer (as of 2024), followed by states in the Northeast like and New York. Other notable areas include in and parts of the Midwest, such as , often on smaller-scale or organic farms. Modern varieties, like the Bellagio released in 2015 for growers, emphasize disease resistance and yield, supporting both commercial and cultivation. Recent varieties, such as Amaranto released around 2020, continue to improve disease resistance and yield for commercial production. Modern cultivation emphasizes warm, temperate climates with well-drained soils, following practices detailed in the cultivation section, including to enhance .

References

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