It keeps in the fridge for at least two weeks. You can make this with just spring onions, or add in some grated ginger. The best implement for grating ginger is a Japanese ceramic grater.

Slice the spring onions into batons and then cut each baton into thin slices lengthways, so that you, again, have shreds. Add to the cabbage. Cut the peppers into very thin slices. Add to the ...