Shrimp Stock

Ingredients

• 8 cups uncooked shrimp heads and shells (from about 1 pound large shrimp)
• 2 onions, peeled, halved and sliced
• 2 stalks celery, chopped
• 2 lemons, halved
• 8 bay leaves
• 1/2 cup chopped fresh parsley
• 1 teaspoon dried leaf basil
• 1 teaspoon dried leaf thyme
• 1 teaspoon dried leaf tarragon
• 1 teaspoon dried leaf oregano
• 3/4 teaspoon whole black peppercorns
• 2 teaspoons salt
• 4 quarts water, cold or at room temperature