Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
   1      tablespoon    vegetable oil
     1/2  medium        onion -- minced
   2      medium        garlic cloves -- minced
     1/2  cup           cider vinegar
     1/2  cup           Worcestershire sauce
   1      tablespoon    dry mustard
   1      tablespoon    dark brown sugar
   1      tablespoon    paprika
   1      teaspoon      salt
   1      teaspoon      cayenne pepper
   1      cup           ketchup

Preparation:

Heat oil in 2-quart saucepan over medium heat. Add onion and garlic; sauté until softened, 4-5 minutes. Stir in all the remaining ingredients except ketchup; bring to a boil. Reduce heat to low, then add ketchup. Cook, stirring occasionally, until thickened, about 15 minutes. Served originally at Mama Rosa's, a long-time barbecue pit restaurant in North Philadelphia, this recipe is adapted from Jim Tarantino's outstanding book "Marinades" (Crossing Press, 1992