These are about the only fresh greens we get throughout the winter. They are quick and easy to grow. I think next year we'll experiment with different sprouts and growing them in different ways.
I think it's a tablespoon or two of seeds (alfalfa I think). Put them in the jar with the mesh top (which we bought at the co-op) rinse them then soak them for about 6 hours. Dump out the water and lay the jar on it's side. I guess you could just leave it upright - I'm not sure why we lay it down.
Anyway, rinse it out every morning and night and in a few days you'll have a jar bursting with sprouts!