That kind of vegetable is kidney bean, also called kidney bean (commonly known as second season bean or green bean). The variety you take is called Jiuzibai, also called old and young. The young pods of leguminous kidney beans are green, yellow and purplish red (or striped) in different shades, and yellow-white to yellow-brown when mature. With the development of pods, the vascular bundles at the back and ventral suture gradually developed, and the layers of thick-walled tissue in mesocarp and endocarp gradually increased, which reduced the quality of fresh food. Therefore, the harvest of tender pods should be timely.

Kidney beans are generally used in stews, such as kidney beans and potatoes. You can also eat it as dried beans. If boiled, there are two kinds of shredding and breaking, and there are also whole pods fried. Either way, kidney beans must be fried with high fire. Kidney beans should not be eaten raw, because eating them raw will produce toxins, leading to diarrhea and vomiting.