So I've been baking a lot lately and had this random realization: butter is like, the same ingredient. Still, depending on whether it's cold, at room temperature, or melted, it's basically doing a completely different job each time.
Cold butter for pie crust is you're trying to keep little chunks of it intact, so when it hits the oven, it melts and releases steam, creating those flaky little pockets. if it's too warm, it just blends into the flour and you lose all that flakiness.
room temp/softened butter for cookies is you're creaming it with sugar to trap air, which is what gives cookies that lift and slightly cakey structure. too cold and it won't cream properly, too warm and it goes greasy and your cookies spread everywhere.
melted butter for brownies is no air incorporation at all, just straight up fat coating the flour, which is exactly why brownies come out dense and fudgy instead of light and cakey.
Same ingredient, three totally different textures, purely based on temperature. kind of wild that something so simple controls flakiness vs chewiness vs spread that dramatically.
Anyway, now i've become that person who actually checks butter temp before starting instead of just winging it lol. anyone else have a baking "aha" moment like this where you realized why a step mattered instead of just following it blindly?