Combine all ingredients except shrimp. Cook, stirring frequently, for 35 to 50
minutes. Allow to cool.
Refrigerate sauce 1 week to allow flavors to truly blend.
Marinate shrimp in sauce for a minimum of 1 hour.
Arrange shrimp on skewers. Grill, basting every minute with leftover sauce. Should
be done in about 5 minutes. Shrimp are done when the flesh turns from pink to white.
Do not overcook! Overcooked shrimp are tough and chewy.