Bienville sauce is a rich and flavorful sauce that is typically used as a topping or condiment for seafood dishes, particularly oysters. The sauce is named after the French explorer Jean-Baptiste Le Moyne de Bienville, who founded New Orleans in 1718.The sauce is usually made with a combination of ingredients such as butter, flour, milk, heavy cream, white wine, shallots, garlic, cayenne pepper, and Worcestershire sauce. Other ingredients that may be added to the sauce include shrimp, crab meat, mushrooms, and green onions. The sauce is typically cooked until it thickens and becomes creamy, and it is often served hot over oysters or other seafood dishes.Bienville sauce is a popular sauce in Creole and Cajun cuisine, and it is often served at seafood restaurants throughout Louisiana and other parts of the southern United States.