Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
   2      cans          guava nectar -- (11.5 oz. cans)
   1 1/2  cups          onion -- chopped
     2/3  cup           guava jelly
     1/3  cup           dry sherry
     1/4  cup           molasses (mild-flavored light)
   3      tablespoons   red wine vinegar
   2      tablespoons   tomato paste
   1 1/2  tablespoons   garlic -- chopped
   1      tablespoon    ground cumin
   2      teaspoons     dry mustard

Preparation:

Whisk all ingredients in a large saucepan. Boil mixture, whisking until jelly dissolves. Reduce heat and simmer until sauce is reduced to 3 cups. Cool.