1. Choose well-coloured fruit, cut it up roughly and put in a saucepan with the sugar, salt, and citric acid or vinegar.
2. Add a few spoons of water to prevent the tomatoes burning until the juice begins to run.
3. Heat gently and cook until the fruit is well pulped; press the pulp through a stainless sieve, reheat in a clean saucepan, then bottle and finish.
To sterilise bottles see
Sterilising Bottles.