measure out 1 cup of all-purpose flour. remove 2 tablespoons of all-purpose flour and put them back in your flour container. replace the 2 tablespoons of all-purpose flour with 2 tablespoons of cornstarch. sift the all-purpose flour and the cornstarch together 5 times. this will incorporate the cornstarch into the flour and aerate the flour. voila! homemade cake flour!
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