best quality diced stewing beef • chopped tomatoes • olive oil • frozen or tinned sweetcorn • aubergines chopped into 1cm cubes • courgettes chopped into 1cm cubes • small button mushrooms • kidney beans (soaked overnight if using from dried) • cannelini beans (soaked overnight if using from dried) • beef or chicken stock • onions chopped thinly • garlic finely chopped •