Ordinary gluten free flour is unsuitable for breadmaking because the gluten is needed to form the bread texture. Ditto pastry. I tried making it with gluten free flour and ended up with a mush of crumbs that would not hold together. The ingredient in Doves Farm gluten free bread flour which substitutes for the action of gluten is xanthan gum. You can also add it ingredients for gluten free pastry. Health food stores and supermarkets sell it. You should research before buying because it can cause allergies and you are advised not to to give it to young children. Guar gum is an alternative.