Boiled Gulf Shrimp

1 gallon water
1 (3 ounce) box Zatarain's crab boil
2 lemons, sliced
6 peppercorns
2 bay leaves
5 pounds raw shrimp in the shell

Bring to boil the water seasoned with crab boil, lemons, peppercorns and bay leaves. Drop in shrimp. When water returns to a boil, cook jumbo or large shrimp for 12 to 13 minutes and medium shrimp for 7 to 8 minutes. Remove from heat and add 1 quart ice water. Let sit for 10 minutes. Drain. Serve R