Cajun trinity. Onions, bell peppers and celery are the base for much of the cooking in the regional cuisines of South Louisiana.C'est Tout is a special mix of Dehydrated Vegetables in every Cajun dish and more. Simply add 4 tablespoon fulls to a pan or pot for a full cup of re-hydrated Veggies. In less than 2 minutes C'est Tout Trinity Mix can be re-hydrated and ready to saute with butter, olive oil, or whatever you desire. To re-hydrate, place amount desired in a pan or pot over medium/high heat. Pour water over veggies until there is about a half inch of water above the veggies. Bring water to a boil, continue stirring until most water is steamed out. The veggies will reconstitute to its original size and shape, and ready for the remainder of any recipe!