12 cups water
2 pounds unpeeled medium shrimp
2 teaspoons Old Bay seasoning
1 cup chopped onion
1 cup chopped green bell pepper
2/3 cup cider vinegar
1 1/2 tablespoons vegetable oil
1 teaspoon salt
1/4 teaspoon black pepper

Bring water to a boil in a large saucepan. Add shrimp and seasoning; cook 3 minutes or until done. Drain and cool completely. Place shrimp in a large zip-top plastic bag. Add remaining ingredients; seal and marinate in refrigerator 30 minutes, turning bag occasionally. Remove shrimp from bag, reserving marinade. Peel shrimp; place in a large bowl. Add reserved marinade; toss gently to coat.

Yield: 18 servings (serving size: about 2 shrimp)