Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
   8                    canned chipotle chiles in adobo sauce
   3      tablespoons   oil
   1      large         onion -- chopped
   2      cloves        garlic
  28      ounces        ketchup
     1/3  cup           firmly packed brown sugar
     1/3  cup           red wine vinegar
     1/4  cup           Worcestershire sauce
     1/4  cup           yellow prepared mustard

Preparation:

Finely chop chiles in sauce. Heat the oil and cook onion and garlic until soft and clearing. Add the remaining ingredients, bring to a gently boil, stirring constantly and then turn down and let simmer about 15 minutes. Transfer to a blender and thoroughly blend. Season to taste with salt and pepper.