Time for a Dairy Free, Casein Free, Soy Free Buttermilk recipe. (Also known as Dairy Free Sour Milk) 1 Cup prepared Vance’s Darifree minus 1 T 1 T Olive Oil 1/2 t Xantham Gum 1 T Vinegar or Lemon Juice Add Oil to measuring cup. Add Darifree to 1 cup line. Add the Xantham Gum and Vinegar/Lemon Juice. Wisk/Mix and let sit for 5 minutes then use. (OK Don’t know if the sitting is required but that is what you do for normal milk turned to Sour Milk with vinegar or lemon juice.) Use in recipes calling for Buttermilk or Sour Milk.