Combine all ingredients except shrimp in a small saucepan. Cook over medium heat until well blended, about 5 minutes, stirring constantly; cool to room temperature. Place shrimp in medium bowl, add marinade; toss to coat. Cover and refrigerate 2 to 3 hours.
Preheat grill to medium-high. Drain shrimp, reserving marinade. Thread marinated shrimp onto skewers. Grill until cooked through, about 5 minutes, turning once. Meanwhile, pour reserved marinade into a small saucepan and simmer 5 minutes; brush on shrimp before removing from grill.
Makes 2 servings.
(Adapted from "Out of the Ordinary")