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Frijoles negros (literally "black beans" in Spanish) is a nutritious dish made with black beans, prepared in Cuba, Venezuela, Puerto Rico, Mexico, and other nations in Latin America. The black bean, a legume of the species Phaseolus vulgaris, are usually purchased in either canned or dried form. 1 cup of dried black beans yields approximately 2½ cups of cooked beans. Black bean soup (sopa de frijoles negros) is another commonly prepared Cuban favorite.
Black beans are high in folate (256mcg), iron (3.61mg), magnesium (120mg), and phosphorus (241mg); they are also a source of zinc (1.92mg), niacin (2mg), and thiamine (0.42mg) - based on 1 cup portion size.