See also: Beans, dried and Article on Black Beans
BLACK TURTLE BEANS
A variety of the common bean (Phaseolus vulgaris).
This is a small black bean with a particularly rich and full flavor. It is a favorite in southern Mexico, South America and the Caribbean.
In Brazil a popular dish 'feijoada copleta' consists of meats and black beans served with cassava meal, collard greens, oranges and fresh pepper sauce.
A common breakfast dish of Costa Rica is 'gallo pinto' - fried black beans and rice.
Black Beans are sweet tasting with an almost mushroom-like flavor and soft floury texture. These beans are medium sized, oval, with a matt black color. They are the most popular beans in Costa Rica and Cuba.
CDC.gov - 5 a Day