Let’s compare textures, because that’s the real reason we’re here. Cake flour gives you a crumb that’s almost velvety, like a whisper on your tongue. All-purpose flour, even with cornstarch, yields a slightly denser, more “rustic” crumb—think of it as the difference between a cashmere sweater and a cozy flannel. Both keep you warm, but one is fancier.
I once brought a cake made with the DIY blend to a potluck, and someone asked if I’d used “professional magic.” I just winked and said, “Cornstarch and a touch of hubris.” They believed me. That’s the power of this hack—it’s the culinary equivalent of wearing a fake mustache to a party, but it works beautifully.
The Final Verdict
So, is cake flour truly equivalent to all-purpose flour? Only if you cheat. And cheating is perfectly legal here. The cornstarch trick is your get-out-of-jail-free card for tender cakes. Just remember: sift like you mean it, measure like a scientist, and never, ever use this hack for gluten-free baking (different science, different tragedy).
Now go forth and bake. Your cake will be light, your friends will be impressed, and you’ll have successfully bamboozled everyone into thinking you actually bought the fancy flour. Your secret is safe with me—and with that bag of cornstarch hiding in your pantry like a kitchen ninja.
