Storage and Uses Chop off the greens and keep the roots unwashed in the refrigerator until you're ready to use them. They'll last one to two weeks in a sealed plastic bag. Radishes are eaten raw in salads and can also be used in soups, stir-fries or can be added to cooked dishes, or steamed and served as a whole vegetable. Can be used to make tasty 'Mulangi Sambar'.