Traditional couscous can be bought in Britain, but needs pre-soaking and takes a long time to cook – it’s usually steamed. Quick-cook couscous is more readily available and more convenient, as it just needs rehydrating in boiled or simmering water. Ready-flavoured couscous can be bought in supermarkets, but you'll usually get a tastier result by adding your own ingredients to flavour plain couscous during cooking.