Make your own Cajun white gravy with Tony Chachere's White Gravy Mix. This white gravy mix is easy to make and adds great flavor to your favorite dishes. Add 1 tsp, cracked black pepper to Tony Chachere's White Gravy mix to make Pepper Gravy. Add 1 Tbsp butter to Tony Chachere's White Gravy mix to make Buttery White Gravy. Add 1 cup Tony Chachere's White Gravy mix to 2 cups of water to make a white roux.