Makes 425ml. Keeps for three days in the fridge
2 garlic cloves, peeled and finely chopped
1 red onion, peeled and finely sliced
400g tin chopped organic tomatoes
1 tbsp chopped fresh basil
Place all the ingredients except the basil in a small saucepan. Bring to the boil, then lower the heat and simmer, stirring occasionally, for 30-40 minutes, until the mixture is soft and syrupy. Add a little water if necessary during the cooking process.
Transfer to a small bowl, cover and chill. Serve with freshly chopped basil.