This is a recipe from Commander's Palace in New Orleans, from back when Emeril Lagasse was the chef there. The title should read "Commander's Shrimp & Andouille Sausage with Creole Mustard Sauce", but it wouldn't fit! It combines the elements of Creole and Cajun cooking together. Try to find Andouille Sausage because of it's unique taste, but if you can't find it another good quality spicy smoked pork sausage can be substituted. Serve this over angel hair pasta with a chilled light red wine.