Serve with plum sauce or a spicy-hot dipping sauce. Adapted from "Quick and Easy Chinese" by Nancie McDermott. (Prep time includes 30 minutes marinating time) Dried chili flakes are my addition.
Combine all ingredients, except shrimp, in a medium bowl. Stir well to dissolve. Add shrimp and stir to coat. Cover and place in refrigerator to marinate for 30 minutes, up to 2 hours.
Put 3-5 shrimp per skewer, depending on size. Grill on lightly oiled hot grill until done - approximately 2 minutes per side. Large shrimp may not require skewers and be placed individually on the grill.