Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
   2      tablespoons   vegetable oil
   1      large         yellow onion -- diced
   2      tablespoons   ginger -- minced
   2      tablespoons   garlic -- minced
   1      cup           dark rum
     1/2  cup           red wine vinegar
   1      cup           ketchup
     1/2  cup           molasses
     1/2  cup           brown sugar -- packed
   1      tablespoon    allspice
   1      pinch         mace
     1/4  teaspoon      salt and black pepper

Preparation:

In a small sauce pan over medium heat, heat oil until hot but not smoking. Add onions and sauté, stirring occasionally, until translucent, 5 to 7 minutes. Add ginger and garlic and sauté, stirring for 1 minute. Add rum, vinegar, ketchup, molasses, sugar, allspice, mace and salt and pepper and bring just to a boil. Remove from heat. Best if made a day ahead of use.