How to Make Sour Powdered Sugar (4 Steps)

A sweet and tangy coating for candy, sour powdered sugar is not accessible to many consumers. With some readily available ingredients, you can make your own for lining drink glasses and topping for cookies and candies. This recipe requires powdered citric acid -- also known as sour salt -- which is a naturally derived from the peel of citrus fruits. Look for it with Kosher foods or baking ingredients at well-stocked grocery stores.