Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
   2      pounds        fresh shrimp -- (16 - 18 to lb.)
   1      tablespoon    tomato paste
   1      tablespoon    oregano
   1      teaspoon      minced garlic
   3      tablespoons   finely chopped fresh parsley
   2      tablespoons   red wine vinegar
   1      teaspoon      salt
                        freshly ground pepper

Preparation:

Shell and devein shrimp, leaving tails intact, butterfly. Combine remaining ingredients to make marinade. Marinade at room temperature for about 2 hours, stirring every half hour to coat shrimp. Prepare grill. Place shrimp on grill rack over medium coals and cook for about 5 minutes, basting shrimp with marinate. Turn shrimp and cook about 3 to 5 minutes longer until shrimp are lightly brown and flesh is firm to touch. Do not overcook. Top with remaining marinade. Serve with rice.