For prize-winning flavor, serve the perfect spread in Amish Farmhouse Kitchens Sweet Potato Butter (18 oz.). From time-honored Amish recipes to the true care dedicated to every small batch, Amish Farmhouse Kitchens are not just for special occasions, but to make every occasion special! Sweet Potato Butter (18 oz.) Ingredients: Sweet potatoes white sugar vinegar spices vanilla (simple syrup vanillin ethyl vanillin caramel colour prop glycol and water) salt bisulfate of soda.