Gluten-free flours by John Spottiswood.

Gluten is what makes wheat-based bread dough so sticky and elastic. This helps the dough hold in the air bubbles created by the yeast so that it will rise and eventually bake into a fluffy, porous loaf. If you're gluten-intolerant, though, you'll need to use gluten-free flour, along with an arsenal of ingredients to make it behave like it has gluten.