Q: A friend recently noticed that her bag of powdered sugar said “cornstarch added” and we were wondering if that would change how it is used for baking recipes.
— S.D., Columbus, Ohio

A: Cornstarch has been added to powdered sugar as an anti-caking agent for many years. You likely have been using it all along. It’s possible the bag was changed to reflect the starch’s inclusion in the mix, but there is no need for concern. It will have no effect on your baking.

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