Can you use bread flour for all purpose flour

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Depending on how much you know about pastry, the baking aisle of the supermarket is either extremely exciting or completely terrifying. There are a ton of flours out there—not just good ol' all-purpose, but pastry, bread, and cake as well. But what's the difference between all-purpose flour and bread flour? Pastry and cake? Well, in case you couldn't guess, they're all slightly different, and serve specific, slightly different functions. Here are the most common types, what they're all about, and when you should (and shouldn't) use them. (Note: We're just talking about white wheat flours right now—we'll save a discussion of whole wheat, rye, buckwheat, spelt, and various nut flours for another time.)

All-Purpose (AP) Flour:

The name pretty much says it all! Nine times out of ten, this is what you're reaching for when baking or cooking. If you have room for just one flour in your kitchen, all-purpose is your guy. Standard AP flour is a white flour, meaning the wheat grains (called wheatberries) have been stripped of their bran and germ during processing and grinding, leaving just the starchy endosperm. That means that most AP flours are more shelf stable (yeah, flour goes bad!) because it’s the oils in the germ that cause it to go rancid. It also means, unfortunately, that most of the nutritive properties of the wheat have been removed and along with them much of the natural flavor of the plant. The upside of all-purpose flour, though, is that it behaves predictably in baking. The protein content of AP flours are standardized during processing to between 9% and 11%, depending on the brand and type of wheat used. The amount of protein corresponds to how much gluten is formed when flour comes into contact with water. Gluten gives baked goods structure—the more gluten, the “stronger” the flour. AP falls in the mid-range of protein levels, which makes it an appropriate choice for most baked goods like cookies, muffins, and pie crust (hence the name “all-purpose”). Look for an unbleached variety, which indicates that it has not been chemically treated to whiten and “soften” the flour. In general, you can use AP flour in place of any of these other flours—it won't produce quite the same texture, but it'll be close enough.

No flour, no pizza. No pizza, no fun.

Bread Flour:

The main difference between bread flour and all-purpose flour is a matter of protein. Bread flour, which comes in white and whole wheat varieties, has a higher protein content than all-purpose, usually 11-13%. It’s called “bread flour” because most bread requires higher amounts of protein to produce lots of gluten. Gluten is the stringy strands that give bread dough its stretch and elasticity, and baked bread its characteristic chew. Kneading dough develops a network of gluten strands that trap air and produce the airy holes characteristic of many breads. You can use bread flour in place of AP flour when you actually want a chewier result—in pizza dough, for instance—but you don't want to use it in place of cake or pastry flour, or in any baked goods that you want to be light and tender.

Cake and Pastry Flour:

You may be sensing a theme here with how these flours are labeled. Cake flour is used in cake-making. On the other end of the spectrum from bread flour, cake flour has a lower protein content than all-purpose. Whereas bread is supposed to be chewy, and therefore chock-full-of gluten, cake is supposed to be fluffy and tender. Gluten development is not the object, so cake flour is low in protein, usually around 9%. Pastry flour has an even lower protein content than cake flour, clocking in around 8%, and is mostly used to make things like pie crusts, biscuits, and scones—anything where you want a tender, crumbly, or flaky texture. In a pinch, feel free to swap cake or pastry flour for AP flour in recipes where tenderness is desirable (like pancakes), but not for things like flatbreads.

Prepping, proofing, and baking. The process of making bread from scratch can be a long one, but is one of the most satisfying ways to pass the time (in my opinion, at least). In the past year, Americans seem to agree with me, as 80% of home bakers enjoyed the chewy, delicious results of freshly-baked bread due to spending more time at home. With baking therapy becoming a part of people's normal routines, there's a chance you've wondered if you can substitute bread flour for all-purpose flour (and vice versa). So if you run out or there's no bread flour left at the store, read on to learn the difference between the two types of flour. Then you'll know exactly what will happen if you substitute one for the other in your baking.

Bread Flour vs. All-Purpose Flour

Both flours are made from wheat and literally sit next to each other in the baking aisle of the grocery store. So what's the difference between all-purpose flour and bread flour, anyway? The short answer: protein and gluten content. According to the pros at Bob's Red Mill, bread flour has approximately 13% more protein than all-purpose flour. This produces a higher amount of gluten, allowing for a higher rise and the chewy, light texture you expect from a loaf of bread. And as the name implies, all-purpose flour is really for all types of baking purposes (i.e. cakes, cookies, and quick breads). The lower protein amount, however, allows for the same firm texture and structure of bread, but with less rise.

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Can I Substitute Bread Flour for All-Purpose Flour?

After testing a simple white bread recipe with both bread flour and all-purpose flour, the hotline bakers at King Arthur Flour assure concerned home bakers that yes, you can use either flour in place of the other in a pinch. Other than the all-purpose loaf being slightly more tender, there were few differences between the two loaves of bread.

Of course, King Arthur Flour still recommends using the bread called-for in the recipe, but at least you can rest easy knowing you can substitute bread flour for all-purpose flour (and the other way around) without needing to run to the store. So go ahead and try a new delicious bread recipe today. If you already know you need a good bread recipe that doesn't require bread flour, try starting with our easy everyday bread.

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