When I read around the net about baking gluten-free I happened across some info on sweet potato flour. Now, where do I find it? Here are some links with info if you are interested

USDA
speical foods

I found a yam flour (the same?) in the ethnic food section of our super market HEB. It is under african food imports. I havent tried it yet. they also had potato starch, for some reason I could not find my normal potato starch at whole foods or anywhere. I am sensitive and did not have a reaction to it.

I got some sweet potato flour at a Asian store....it was a bit pricey... I won't continue to buy it....there is too many other choices....I just use potato starch and tapioca flour, and it is at the Asian store too....