Make Liquid Buttermilk like a pro using our Buttermilk Powder and water. star Liquid Buttermilk Rated 5.0 stars by 1 users Share on Twitter Share on Facebook Share on Pinterest Share on Whatsapp Servings 1 cup Prep Time 5 minutes Cook Time 0 minutes Make Liquid Buttermilk like a pro using our Buttermilk Powder and water. Ingredients 1/4 cup Buttermilk Powder 1 cup water DirectionsCombine 1 cup water with ¼ cup Buttermilk Powder to make about 1 cup of Liquid Buttermilk. Stir and mix in recipes calling for buttermilk.