Pull the spring onions yourself
I also like to use a bunch of spring onions when cooking. So far, I've just thrown away the leftovers until I was given this tip.
You can put the bottom part with the roots very well in water. Then the spring onion grows a good deal further and can serve well in the next dish!
Hard to believe what you just throw away ... Replace the water every two to three days. The more patience one has, the bigger / longer becomes the "new breed"!
