Try this Homemade Cake Flour recipe, or contribute your own.
Why is there no cake flour in the pantry when the mixing bowl is already on the scale? Standard all-purpose flour contains roughly ten to twelve percent protein, whereas specialized cake flour sits closer to eight percent, meaning the addition of cornstarch physically blocks gluten development by diluting the dense wheat proteins with pure starch granules.
Whisking the dry components thoroughly before storage ensures that delicate batters rise evenly without clumping. Proper airtight sealing prevents ambient moisture from activating the starches prematurely.