We have large wok and want to cook a stir fry for masses of people. But
need to keep the cost of the main ingredients down. I know pimento (bell
pepper) and courgettes (zucchini) work well but tend to be expensive in
London. (U.K.).

would anyone know of a good combination of vegetables and anything else that
would work well in a low cost combination? also for non-vegetarians I
thought I could add some mince beef at the end, is that a good idea?