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by Jeremy Pang

Sweet potato vermicelli noodles can be tricky to get hold of, but they keep for ages and really are the key to a great japchae. Mix up the veg if you wish to make use of what you have in the fridge.

Main course

Buyer's guide

Shiitake are now cultivated in Britain and can be bought fresh or dried.

Preparation

Snip off the hard stems (but don’t discard them – add to soups and stock). Shiitake go well with pork, meat and steamed fish; they can also be mixed with ordinary cultivated mushrooms.