Tomato Purée

• 2 lbs (900 g) very ripe tomatoes
• 1 small onion, chopped

Cut the tomatoes into quarters; put into a stainless steel saucepan with the onion, salt, freshly ground pepper and sugar. Cook on a gentle heat until the tomatoes are soft (no water is needed). Put through the fine blade of the mouli-legume or a nylon sieve. Allow to get cold, then refrigerate or freeze.