Coca Cola Barbecue Sauce

   1      can           Coke -- (350ml)
   325ml                ketchup
   175g                 finely chopped onion
   50ml                 cider vinegar
   50ml                 Worcestershire sauce
   1      teaspoon      Chili powder
   1      teaspoon      salt
                        hot pepper sauce to taste

In a medium saucepan, combine all ingredients. Bring to a boil. Reduce heat to medium-low and simmer, covered for 30-45 minutes or until sauce is thickened, stirring occasionally. Strain if desired. Season with hot pepper sauce.