1/2 cup vegetable oil
1/2 cup chili sauce
1/2 cup catsup
1/3 cup fresh-squeezed lemon juice
1/4 cup Worcestershire sauce
2 tablespoons Gravy Master
1 teaspoon soy sauce
1 teaspoon Tabasco [registered trademark symbol] sauce
2 teaspoons minced garlic
1 tablespoon dark brown sugar, packed to measure
1 lemon, cut into wedges
2 pounds large shrimp (20 to 32) shelled and deveined