Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
   1 1/2  cups          brown sugar
     1/2  cup           butter
   1      cup           ketchup
   1      small bottle  Heinz 57 sauce
   1      tablespoon    celery seed
   1      cup           onion -- finely chopped
   2      cloves        garlic -- minced
     1/2  cup           vinegar
   1      tablespoon    dry mustard -- red pepper flakes
                        -- to

Preparation:

Caramelize butter and sugar until bubbly. Add vinegar and whisk. Add rest of ingredients and simmer until thickened.