Gluten is two proteins—glutenin and gliadin—that get all cozy when you add water. When you knead dough, they form long, stretchy strands. That’s why bagels are chewy and croissants are flaky.
All-purpose flour typically has 8–11% gluten. Not as much as bread flour (that’s the gym rat), but more than cake flour (the delicate fairy). It’s the Goldilocks zone: just right for cookies, muffins, and pancakes.
Here’s the kicker: you can’t see gluten. It’s invisible until you add liquid. So when you dump a cup of AP flour into a bowl, it looks innocent. But trust me, it’s hiding a party trick.
Are there flours without gluten? (Spoiler: yes, and they’re sneaky)
If you need to avoid gluten, all-purpose is a hard no. But there are impostors. Almond flour? Gluten-free. Coconut flour? Also a rebel. Rice flour, oat flour, chickpea flour—all gluten-free, assuming they’re not contaminated.
Divided Sunset Gluten Free All Purpose Flour
But here’s the thing: gluten-free baking is a different beast. These flours lack stretchy proteins. So your cookies might turn into sand dollars. Your bread? A doorstop. It’s a noble, frustrating hobby.
Why does all-purpose flour have gluten in the first place? Evolution, my friend. Wheat plants evolved gluten to store protein and give seeds energy. Humans later realized, “Hey, this stuff makes bread taste amazing.” And thus, civilization was built on baguettes.