In a large saucepan, combine first 4 ingredients; bring to a boil. Add shrimp, stir gently. Cover and cook until tender, about 5 minutes. Drain, peel and devein shrimp. Serve with Cocktail Sauce.
Cocktail Sauce: Combine all ingredients.
1 cup catsup
1 1/2 teaspoon Old Bay Seasoning
1/2 teaspoon prepared horseradish
Makes 4 servings