Don’t throw it. Regrow it!
Green onions, aka scallions or spring onions, are sold with a root end that you always trim off before using the green stalks and slim white bulb in recipes. But did you know you can encourage those root ends to regrow new green onions? I’ll show you how easy it is to regrow an (almost) endless supply of fresh green onions from kitchen scraps. All you need is a starter bunch of green onions, a jar, and fresh water.
How to Regrow Green Onions
Here’s how easy it is to upcycle this common food scrap you used to throw away.
- Slice off the ends of the bulbs, leaving roots attached.
- Stand the bulbs root-end down in a small jar. (I stood them up in an egg cup.) Add enough water to cover the roots, but leave the top edges above water.
- Set on a windowsill and keep the roots moist. After a few days, green shoots will emerge from the tops of the bulbs. After that, they’ll grow very quickly.
- Keep the roots submerged and change the water at least once a week.
- When the shoots are or four or five inches long, you can plant them in the ground or a pot filled with good quality potting soil. If you keep the root ends in the jar, they will produce green shoots for a while but the plant will weaken eventually and stop producing.
- Snip off what you need, cutting the leaves all the way to the ground; the onions will continue to grow in the ground almost indefinitely, although they could get to be much larger than the green onions you find in your grocery store. If they flower, you can use the flavorful blossoms in salads.
Originally published in allrecipes.com