is edamame a vine
Ad. Typically, soybeans are allowed to mature on the vine to form hard beans that can be easily harvested and stored. They can also be picked at the peak of ripeness, right before they start to harden; these are called edamame in Japan or mao dou in China.t is made from soybeans that are harvested before they start to harden, and then quickly parboiled and frozen to retain their fresh flavor. There are a number of ways to eat these soybeans, ranging from plain out of hand snacks to processed in sweets and savories.