Cabbage is an edible plant. It is a lot like broccoli, cauliflower, or Brussels sprouts. Cabbage is eaten in many ways around the world. Coleslaw and sauerkraut are popular foods that use cabbage. It is also used to make kimchi and borscht, and can also be used in salads. Red cabbage juice can be used as a pH indicator. Cabbages are usually green, but they can also be red.