Barbecue Sauce

2 tablespoons of vegetable oil
2 to 3 cloves of garlic (crushed)
1 small onion (finely chopped)
6 to 8 whole cloves
½ teaspoon of cayenne pepper
½ teaspoon of cinnamon (or cumin)
1 cup of ketchup
½ cup or cider (or malt) vinegar
½ cup of soy sauce
1/3 cup of packed dark brown sugar
2 tablespoons of Worcestershire sauce
1 tablespoon of molasses