<p>Personally, I've found that the gf foodies tend to go a bit nutso with the xanthan gum and flour mixtures. I've been gluten-free baking for years, and never used xanthan gum. My results may not always be gourmet, but they aren't bad, either

Keep in mind that in a lot of baked goods the goal (when working with wheat flour) is to *not* develop the gluten, and things like this often translate well without really needing a whole lot in the way of added binders.</p>
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<p>Take cornbread, for example. If you search for gluten-free cornbread, you find a bunch of examples with a mix of different non-wheat flours plus xanthan gum. Meanwhile, the <a href="http://dinneranddessert.wordpress.com/2008/02/20/southern-cornbread/" target="_blank">Southern Cornbread recipe from Joy of Cooking</a> is gluten-free by default (and cf as well, if you use a non-dairy milk, which works just fine. I normally use half coconut milk and half water, with a tablespoonful of vinegar), without any unusual ingredients.</p>
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<p>I agree with the other poster about cornmeal and masa harina being readily available and low cost. I tend to not like the flavor of masa harina used plain, but find it works well mixed with regular cornmeal to lighten the texture.</p>
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<p>Grinding your own flour can help reduce costs. I ground almonds and flax seeds in a plain old coffee grinder, and I've seen instructions for making rice flour and bean flour. Really, if you think about it, these are considered the dirt cheap staples, and flours made from them shouldn't be crazy expensive!</p>
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<p>I've used ground flax seed to replace about a quarter of the flour (with some other non-wheat flour for the other 3/4) to serve as a binder. I'm not sure how this actually compares cost-wise with xanthan gum, though. An extra egg (or anything commonly used to replace egg in vegan recipes) may also do the trick.</p>