What Is a Good Cornstarch Substitute?

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A good cornstarch substitute is all-purpose flour or arrowroot. Flour is the most common substitution, but it is not an exact one. It requires more flour to accomplish the same thickening that cornstarch is capable of, so if a recipe requires one tablespoon of cornstarch, then 3 tablespoons of flour should be used to achieve the same results.

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