4 c. ketchup
4 c. red wine vinegar
3 cloves garlic, minced
2 tbsp. Worcestershire sauce
1 tsp. Tabasco sauce
Fresh ground black pepper
4 c. olive oil
8 tbsp. onion, chopped fine
4 c. sugar

Mix all the ingredients, except the olive oil, together. Process in food processor. Slowly add mixture until emulsified.