Kidney bean

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Kidney beans
Kidney beans.jpg
Uncooked red kidney beans
Nutritional value per 100 g (3.5 oz)
Energy 1,393 kJ (333 kcal)
60 g
Sugars 2 g
Dietary fiber 15 g
1 g
24 g
Vitamins
(16%)
0.8 mg
Folate (B9)
(99%)
394 μg
Trace metals
Calcium
(14%)
143 mg
Iron
(62%)
8 mg
Magnesium
(39%)
140 mg
Potassium
(30%)
1406 mg
Zinc
(32%)
3 mg
Other constituents
Water 12 g
Percentages are roughly approximated using US recommendations for adults.
Source: USDA Nutrient Database

The kidney bean is a variety of common bean (Phaseolus vulgaris). It is named for its visual resemblance in shape and colour to a kidney. Kidney red beans can be confused with other beans that are red, such as azuki beans. In Jamaica, they are called "red peas".

Classification[edit]

  • Red kidney bean (also known as: common kidney bean).
  • Light speckled kidney bean (and long shape light speckled kidney bean).
  • Red speckled kidney bean (and long shape light speckled kidney bean).
  • White kidney bean (also known as cannellini).[1]

The dishes[edit]

Red kidney beans are commonly used in chili con carne and are an integral part of the cuisine in northern regions of India and Pakistan, where the beans are known as rajma and are used in a dish of the same name. Red kidney beans are used in New Orleans and much of southern Louisiana for the classic Monday Creole dish of red beans and rice. The smaller, darker red beans are also used, particularly in Louisiana families with a recent Caribbean heritage. Small kidney beans used in La Rioja, Spain, are called caparrones.

Toxicity[edit]

Kidney beans are more toxic than most other bean varieties if not pre-soaked and subsequently heated to the boiling point for at least 10 minutes. The U.S Food and Drug Administration recommends boiling for 30 minutes to ensure they reach a sufficient temperature for long enough to completely destroy the toxin.[2] However, cooking at the lower temperature of 80 °C (176 °F), such as in a slow cooker, can increase this danger and raise the toxin level up to fivefold.[3]

References[edit]

  1. ^ "Kidney Beans". The world's healthiest foods. Retrieved 2007-11-05. 
  2. ^ "Bad Bug Book (2012)" (pdf). Foodborne Pathogenic Microorganisms and Natural Toxins Handbook: Phytohaemagglutinin. Food and Drug Administration. 2012. Retrieved 26 December 2013. "Consumers should boil the beans for at least 30 minutes to ensure that the product reaches sufficient temperature" 
  3. ^ Phytohaemagglutinin. Foodborne Pathogenic Microorganisms and Natural Toxins Handbook, US Food and Drug Administration (2009)