Barbecued Shrimp
["2 Tbsp. butter or margarine", "1/2 c. chopped onion", "3/4 c. ketchup", "1/4 c. water", "2 1/2 Tbsp. Worcestershire sauce", "3 Tbsp. brown sugar", "1 Tbsp. white vinegar", "1 Tbsp. tomato paste", "1/2 tsp. dry mustard", "dash of red pepper", "24 large or jumbo shrimp, shelled and deveined", "12 bacon slices, cut in halves"]
["Melt butter in a medium saucepan. Add onion; saute until soft and transparent. Stir in ketchup, water, Worcestershire sauce, sugar, vinegar, tomato paste, dry mustard and red pepper. Stirring occasionally, simmer uncovered 15 minutes. Remove from heat. Immediately stir shrimp into sauce, covering completely. Let stand 15 minutes."]
["butter", "onion", "ketchup", "water", "Worcestershire sauce", "brown sugar", "white vinegar", "tomato paste", "dry mustard", "red pepper", "jumbo shrimp", "bacon"]