Yardlong be an

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Yardlong bean
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Division: Magnoliophyta
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Class: Magnoliopsida
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Order: Fabales
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Family: Fabaceae
Subfamily: Faboideae
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Genus: Vigna
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Species: V. unguiculata
Subspecies: V. u. sesquipedalis
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Vigna unguiculata sesquipedalis
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The yardlong bean is also known as the long-podded cowpea, asparagus bean, snake bean, or Chinese long bean. It is known as dau gok in Cantonese, thua fak yao in Thai and kacang panjang in Malay, and vali or eeril in Goa, India. Despite the name, the pods are actually only about half a yard long; the subspecies name sesquipedalis (one-and-a-half-foot-long) is a rather exact approximation of the pods' length.

This plant is of a different genus and is only distantly related to the common bean. It is a vigorous climbing annual vine. A variety of the cowpea family, it is grown primarily for its strikingly long (35-75 cm) immature pods and has uses very similar to that of a green bean. The pods, which begin to form just 60 days after sowing, hang in pairs. They are best if picked for vegetable use before they reach full maturity. The plant is subtropical/tropical and most widely grown in the warmer parts of Southeastern Asia, Thailand, and Southern China. Yardlong beans are quick-growing and daily checking/harvesting is often a necessity. The many varieties of yardlong beans are usually distinguished by the different colors of their mature seeds.
Seeds of yardlong beans. The ones with white tips are those of the light green variety, while the one without white tip is that of the dark green variety. Scale of the ruler is 1 mm.

Uses

Long beans for sale in the market.

The crisp, tender pods are eaten both fresh and cooked. They are at their best when young and slender. They are sometimes cut into short sections for cooking uses. They are used in stirfries in Chinese. In Malaysian cuisine they are often stirfried with chillies and shrimp paste (sambal) or used in cooked salads (kerabu).

Nutrition

They are a good source of protein, vitamin A, thiamin, riboflavin, iron, phosphorus, and potassium, and a very good source for vitamin C, folate, magnesium, and manganese.

In a serving size of 100 grams of yardlong beans there are 47 calories, 0 grams of total fat, 0 mg cholesterol, 4 mg sodium (0% daily value), 8 grams of total carbohydrates (2% daily value), and 3 grams of protein (5% daily value). There is also 17% DV vitamin A, 2% DV iron, 31% DV vitamin C, and 5% DV calcium. (Percent daily values are based on a 2000 calorie diet. Individual daily values may be higher or lower depending on individual calorie needs.)

References

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