Black beans could not be more succinctly and descriptively named. They are commonly referred to as turtle beans, probably in reference to their shiny, dark, shell-like appearance. With a rich flavor that has been compared to mushrooms, black beans have a velvety texture while holding their shape well during cooking.
Both dried and canned black beans are available throughout the year. Dried beans are generally available in prepackaged containers as well as in bulk bins. Just as with any other food that you may purchase in the bulk section, make sure that the bins containing the black beans are covered and that the store has a good product turnover to ensure the beans’ maximal freshness. Whether purchasing black beans in bulk or in packaged containers, make sure that there is no evidence of moisture or insect damage and that they are whole and not cracked.
The seed coat (outermost surface) of black beans is an outstanding source of three anthocyanin flavonoids: delphinidin, petunidin, and malvidin. Kaempferol and quercetin are additional flavonoids provided by this legume. Also contained in black beans are hydroxycinnamic acids including ferulic, sinapic, and chlorogenic acid, as well as numerous triterpenoid phytonutrients, Black beans also provide about 180 milligrams of omega-3 fatty acids per cup in the form of alpha-linolenic acid (ALA).