1. Choose firm, ripe, red tomatoes, cut them roughly into quarters and heat them in a covered saucepan until they are soft.
2. Rub through a stainless sieve and measure the juice.
3. Add the water, sugar, salt and pepper in the proportions given above.
4. Stir to mix, re-heat, and bottle, leaving 1 cm headspace under the screw cap.
5. Place the filled jars on a false bottom in a pan of water at 90°C (fast simmer).
6. The water must cover the jars.
7. Heat the water to boiling point (100°C) and maintain for 10 minutes.
8. Remove the jars to a dry wooden board or sheets of newspaper, and secure the seals.
9. The following day test the seal, and clean, label, and store
To sterilise bottles see
Sterilising Bottles.