nutritional value of potato starch

Potato starch doesn't differ much from gluten starches when it comes to nutrition. One ounce of potato starch has 100 calories, 23.3 grams of carbs and 1.9 grams of protein; the most common gluten thickener, all-purpose flour, has 102 calories, 21.4 grams of carbs and 2.9 grams of protein. Although you miss out on 1 gram of protein per ounce when you use gluten-free potato starch as opposed to flour, potato starch is still a better choice because it thickens liquids in the absence of fat.