Grilled Shrimp With Honey-Ginger Barbecue Sauce

• 1 1/2 cup apple cider vinegar
• 1/2 cup mild honey
• 1/2 cup ketchup
• 1 1/2 tablespoon hot sauce
• 4 large garlic cloves, minced
• 2 tablespoon ginger, peeled and minced
• 1 teaspoon salt
• 4 pound jumbo or extra-large shrimp in shell, peeled, with tail and adjoining shell segment left intact, and deveined
• 4 tablespoon vegetable oil
• 1 teaspoon salt

1. Stir together all the sauce ingredients in a heavy saucepan. Place over a medium-high heat. Simmer uncovered, stirring occasionally, until thickened and reduced to about 1 ¼ cups, about 25-30 minutes.
2. Thread about 6 shrimp on to each skewer.
3. Prepare grill for direct heat cooking, over medium-hot charcoal.
4. Brush shrimp with vegetable oil and sprinkle with salt.
5. Lightly oil the grill rack. Grill shrimp, and after 2 minutes, turn them over.
6. Brush shrimp with some of the sauce, and turn them again. Brush with additional sauce, and grill until just cooked, about 1-2 minutes. Serve with the remaining sauce.