Never buy BUTTERMILK again...use what you already have in your kitchen! Homemade Buttermilk courtesy of Emeril Lagasse 4 1/2 teaspoons white vinegar, or fresh lemon juice 1 cup milk Directions Place the vinegar in a glass-measuring cup, and add enough milk to make 1 cup total liquid. Stir to combine and let stand for 10 to 15 minutes (The mixture will begin to curdle). Use as needed in a recipe, or cover and refrigerate until needed. <3 Emeril <3