Can You Sub Cake Flour for All Purposeに関する深掘り解説を丁寧に解説いたします。

Protein is the gluten factory in flour. More protein means more gluten, which gives bread its chewy, arm-wrestling texture. Cake flour, on the other hand, is the delicate flower that makes you whisper “fluffy” with every bite. Swap them straight up, and your cake might turn into a tire patch—dense, sad, and possibly useful for fixing a bicycle.

But you’re not here for sad cakes. You’re here for victory cakes that make your friends say, “Did you buy this from a bakery?” before crying with joy. So, how do you pull off this flour heist? The secret is cornstarch. For every cup of all-purpose flour, remove two tablespoons, then add two tablespoons of cornstarch. Sift it like your life depends on it—at least three times, as if you’re exorcising gluten demons.

This trick lowers the protein content by diluting the flour. Boom—you’ve just hacked your pantry into pretending it’s cake flour. It’s not perfect; the cornstarch adds a slight silky dustiness that purists might sniff at, but 99% of humans won’t notice. Especially after you slather on that buttercream frosting.