Homemade Cake Flour

Ask the Test Kitchen

I’d like to make my own cake flour. What is the ratio of cornstarch to flour? —J.M.Wyalusing, PennsylvaniaFor every cup of cake flour, use 1 cup minus 2 tablespoons bleached all-purpose flour plus 2 tablespoons cornstarch. Keep in mind that cake flour has properties different from all-purpose flour, so the result may not be the same.

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