I know, I know—that’s a bummer. But baking powder and cornstarch are like distant cousins who only look alike from across the room. Cornstarch is a pure starch, a gentle thickener for sauces, puddings, and gravies. Baking powder, on the other hand, is a chemical leavening agent packed with baking soda, an acid, and a little bit of cornstarch (yes, irony!) to keep it dry.
Imagine tossing a spoonful of baking powder into your gravy. Suddenly, your velvety sauce erupts into a frothy, fizzy mess. Not exactly the elegant dinner you planned, right? It’s a hilarious kitchen disaster waiting to happen—but probably not one you want to re-create on purpose.
Wait, so when can they be swapped?
Here’s where it gets fun. In a pinch, and only for coating foods for frying, baking powder can play a weirdly effective stand-in. The bubbles it creates when heated will give your chicken or onion rings an extra-crispy, puffy crust. It’s not exactly the same as cornstarch’s light, shatter-crunch, but it’s a wildcard trick that makes you feel like a mad scientist in an apron.
Just remember: do not try this in any sauce, pudding, or custard. Your beautiful lemon tart filling will turn into a lumpy, fizzy science experiment. Trust me, I’ve seen the look on a baker’s face when that happens—it’s equal parts confusion and horror, followed by laughter when you realize you’ve just created edible (if tragic) pop rocks.
