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.