With a high protein content, bread flour is made from hard wheat and contains a greater amount of gluten than AP, which is made from softer wheat varieties. When worked by hand-kneading or processing with a dough hook in a stand mixer, the gluten is developed and contributes to a chewier consistency, which is desirable in artisan bread. It brings excellent structure to dough’s, making it the “underwire bra of the baking world,” says Reid. Bois prefers to use it just for extra-chewy baked goods, like pretzels and bagels, due to its dense and heavy texture