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Frijoles negros (literally "black beans" in Spanish) is a Hispanic dish made with black beans, prepared in Cuba, Venezuela (where it is called Caraotas Negras), Puerto Rico, Mexico, and other nations in Latin America. The black bean, a legume of the species Phaseolus vulgaris, is 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.
Sopa de frijoles o sopa de sangre