Green Onions
One of the things I miss most about my summer garden is picking fresh off the vine tomatoes and pulling a few leaves of lettuce to make a fresh salad for lunch or dinner.
Having a little mini garden in the winter appeals to me.
I read somewhere that if I planted the white bulb end part of a green onion (after chopping and adding the green part to whatever it is I'm cooking, of course) it would grow!