Shrimp Souffle with Sauce Recipe

Name: Shrimp Souffle with Sauce Recipe
Ingredients: 1/2 pound shell on raw shrimp, peeled and deveined, shells saved for the sauce; 1/4 lb unsalted butter; 1/4 cup all purpose flour; 1 tsp dijon mustard; 1/4 tsp cayenne pepper; 1/4 tsp salt; 1 cup milk; 1/4 cup grated Parmesan cheese; 3 eggs, separated; 1/4 tsp cream of tartar; 1 TBS sherry, optional; For the Sauce:; 4 shrimp from the 1/2 pound above cut into small pieces; shells from above; 1 bay leaf; 1/4 tsp coriander seeds; 1 cup water; 1/4 cup milk mixed with 1 TBS all purpose flour