2 tsp olive oil

1 small onion chopped

1 tbsp vinegar

1 tbsp soft brown sugar

1/3 cup tomato sauce

1 tbsp Worcestershire sauce

Heat the oil in a small pan and cook the onion over low heat for 3 mins or until the onions are soft. Add the remaining ingredients and bring to a boil. Reduce the heat and simmer for 3 mins stirring occasionally. Serve warm or at room temperature. Can be kept for up to one week.