New Orleans Barbecued Shrimp

Ingredients

8-10 lbs shrimp
1 lb butter
1 lb margarine
6 oz Worcestershire sauce
8 tbs black pepper
1 teaspoon rosemary
4 lemons (sliced)
1 teaspoon Tabasco
4 teaspoons salt
2-4 cloves garlic

Wash shrimp. Spread out in shallow pan. Combine ingredients in
sauce pan over low heat and pour over shrimp. Refrigerate. Baste
and turn shrimp every 30 minutes while refrigerated for several
hours. Bake at 300 degree for 30 minutes, turning shrimp at 10 minute
intervals. Serve in soup bowl with French bread to dip in sauce.