What Is Acceptable to Eat on The GFCF Diet?

Now that we got that out of the way.....

Here's a general description of what is acceptable to eat on a gluten-free diet:
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Several grains and starch sources are considered acceptable for a gluten-free diet. The most frequently used are maize, potatoes, rice, and tapioca (derived from cassava). Other grains and starch sources generally considered suitable for gluten-free diets include amaranth, arrowroot, millet, montina, lupine, quinoa, sorghum (jowar), sweet potato, taro, teff, and yam. Various types of bean, soybean, and nut flours are sometimes used in gluten-free products to add protein and dietary fiber. In spite of its name, buckwheat is not related to wheat; pure buckwheat is considered acceptable for a gluten-free diet, although many commercial buckwheat products are actually mixtures of wheat and buckwheat flours, and thus not acceptable. Gram flour, derived from chickpeas, is also gluten-free.

--Source, Wikipedia

And here's more about eliminating Casein from the diet:
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The theory is that eating or drinking milk protein leads to high levels of protein by-products, called casomorphines, in some children with autism. These by-products may then affect behavior like a drug would. In these children, casomorphines could reduce their desire for social interaction, block pain messages, and increase confusion. If milk protein is taken out of the diet, the idea is that this will reduce the level of casomorphines, and behavior will improve as a result.

--Source, healing thresholds dot com