Yellow wax beans are the edible immature pods of the bean plant, a legume. Fresh beans are firm and smooth, without bruising or spotting; avoid those that are leathery or bulging with seeds. Stored in a plastic bag in the refrigerator for up to 4 days.
For other bean varieties, see adzuki, borlotti, cannellini, cranberry, fava, flageolet, Great Northern, green, Italian green, kidney, lima, pinto, red, and white (navy) beans and chickpeas, green lentils, and lentils.