I tossed some radish seeds, the ones I normally use for sprouting, into my compost bin and I've got a bunch of good looking greens now. Apparently radish leaves are quite a delicacy. When eaten raw in salads, they are spicy and full of flavour. Some people use them to make pesto or stir fries. I'd rather wait a bit more just to see if I can find any radish beneath the soil.