Vegetarians eat pizza. Vegans don't eat pizza because they don't eat meat, dairy, or eggs. Same with most raw foodists since most raw poeple are raw vegan. Vegans will eat soy cheese (usually the kind without caesins), but raw foodists won't because that's a processed food. I still eat meat every now and then, but I haven't had pizza in six months simply because my taste buds just don't want the dairy.
Search the internet for vegan pizza dough. Hit it up.
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"What I do know is that if Karen Carpenter and Mama Cass Elliot had shared that sandwich they'd both be alive today." -Michael K