Cut the excess onion tops, leaving only 1/2 to one inch on the onion.
Take a single stocking and drop an onion down into the bottom of it.
Tie a twist tie right above the onion, and drop another onion down into the stocking.
Continue with this method until the stocking is full. When you need an onion, simply cut one off the bottom of the stocking and work your way up the stocking as you need more.
Hang the stocking in a cool, dry place where the temperature stays around 40 degrees. If you do not have a cool area to store the onions, keep them in the refrigerator with the foil method.
Cut the tops off the onion.
Cut a square piece of tinfoil and wrap it around the the onion.
Repeat this process until all onions are covered, and store the foil covered onions in the refrigerator. Foil wrapped onions can be stored for up to one year in the fridge.