Cornstarch

Cornstarch scores 32 of 100 on the Nutrient Density Score, a Low band that puts it last, 60th of 60, among grains and pasta. There is no standout nutrient to report, since cornstarch is refined almost entirely into starch, with 91.3 grams of carbohydrate and just 0.26 grams of protein per 100 grams.

Cooks reach for cornstarch as a thickener for gravies, sauces, and stir fry glazes, usually mixed with cold water into a slurry before it hits the heat. A one cup measure goes a long way since only a tablespoon or two thickens most dishes, and arrowroot flour is a same-category alternative that scores higher if you are choosing between refined starches.