This recipe is at least a hundred years old, and perhaps older. My grandmother got it in 1930, and it was what she used to make BBQ chicken in the oven.
Barbecue Sauce Recipe
1 1/2 cups water
1/2 cup vinegar
1 teaspoon dry mustard powder
1 teaspoon paprika
1/4 teaspoon cayenne pepper
2 teaspoons salt
2 Tablespoons sugar (can be left out if preferred)
2 Tablespoons Worchestershire Sauce
2 Tablespoons chili powder
Juice of one lemon (3 or 4 Tablespoons lemon juice)
1 cup ketchup
1 medium onion, chopped
2 cloves garlic, chopped (or 1 teaspoon garlic powder if you don't have fresh)
Mix all ingredients together and simmer for 20 minutes.
Pour over chicken in a 9x13 pan and bake, covered, at 350F for 1 1/2 hours. Uncover for the last 30 minutes.
Makes 1 quart (2 pints) of sauce.