Regrow spring onions

When using spring onions, cut it off a couple of cm about the roots. Pierce the bottom piece (with the roots attached) carefully with a toothpick and suspend in a glass of water until a green shoot starts to appear at the top. Then plant and watch them regrow.
With the remainder of your spring onion slice into the sizes you require, place in plastic bag and freeze. Small amounts can then be used for soups, stews, omelettes etc