Potato starch is starch extracted from potatoes. Peeled potatoes are crushed then starch grains are washed out and processed into dried powder form.
Potato starch is flavorless, ideal for adding moistness and a fluffy texture to baked goods without adding flavor.
Used in both savory and sweet recipes. Also used to replace cornstarch in most baking recipes.
Best to use it toward the end of cooking. Used to thicken sauces, gravies, soups, stews, puddings, and pie fillings.