Whip 1 cup natural yoghurt until smooth and thickened. Add 1 small onion, peeled and diced finely or grated, 1 small green chilli, finely sliced, 1 small tomato, finely diced, pinch salt, leaves or herbs according to cuisine eg. curry leaves, kaffir lime leaves, or coriander. Dry fry 1/2 teaspoon black mustard seeds in a hot pan until the pop and become aromatic and stir them through. Allow to sit to maximise flavours for at least one hour, and preferable overnight. Serve with anything you fancy. Careful...highly addictive!
