If your recipe calls for cake flour and you don't have any, it's easy to make a suitable replacement with all-purpose flour and cornstarch. Here's how.
Measure the Flour Properly. Start by stirring the all-purpose flour to loosen it. Then, use the spoon and sweep method: Spoon the flour into a 1-cup dry measuring cup until it overflows. Use the back of a butter knife or the straight edge of a wooden spoon to level off the excess without packing it down.
7/8 cup all-purpose flour
Replace Some Flour with Cornstarch. Remove 2 tablespoons of the flour (discard or save for another use). Replace the removed flour with two tablespoons of cornstarch.
2 tbsp cornstarch
Combine and Sift. Whisk or sift the flour and cornstarch together at least once to ensure they are evenly distributed. Sifting helps create a finer texture, more closely resembling cake flour.
Now, your homemade cake flour substitute is ready to use! Simply measure it as you would store-bought cake flour in your recipe.
Keyword all purpose flour, cornstarch, how to make cake flour