The main difference between black beans and black kidney beans is in the kernel and the color of the water in which the beans are soaked. China's native black beans are yellow-kerneled lentil black beans, and in recent years, green-kerneled black beans have emerged. Yellow-kerneled lentil black beans are often used by old Chinese doctors to treat kidney yang deficiency as well as a number of other ailments. Green heart black beans are mainly used as bean seedling dishes.

The difference between black beans and black kidney beans is actually very simple, the first look at the bean kernel: after biting open the beans, the bean kernel is yellow is black beans, is white is black kidney beans. Taobao's mountain maiden black beans is good, is a yellow kernel flat black beans, Bali farmers homegrown, do not play pesticides to eat the rest assured. In addition, after biting open the black skin bean kernel is green is also a new variety of black beans, in the market price is more expensive.

The difference between black beans and black kidney beans can also be distinguished from the soaking water. Black beans after soaking water is dark red or dark purple, and black kidney beans after soaking water black as ink.