Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
   1 1/2  cups          catsup
     1/2  cup           white vinegar
     1/4  large         lemon - seeded and -- finely minced
                        -- including rind
   1      tablespoon    gravy master or kitchen bouquet
   1      teaspoon      sugar
   1      teaspoon      ground coriander
     1/2  teaspoon      ground cumin seed
     1/4  teaspoon      ground ginger
     1/8  teaspoon      paprika
                        cayenne pepper to taste

Preparation:

Combine all ingredients in a small saucepan; simmer 15 minutes, stirring frequently. Use immediately for marinating shrimp for the grill.