Shake up seven ingredients for a simple, homemade gluten-free flour mix; the perfect substitute in holiday baking. Thanks to a hearty blend of rice flour, tapioca flour, and potato starch, this easy gluten-free mix is ideal for baked goods that require little structure, such as sugar cookies, brownies, and crumbles. I wouldn't recommend it for desserts that require more structure, like cakes, and I haven't tried it in breads...yet. This recipe first appeared in Season 1 of Good Eats: Reloaded.