Where to find food items (Budapest)

Hi, all. I am looking for a store that sells just plain pizza crusts. Not gluten free/completely non-allergenic, just a base with which to build a pizza. Next, I am looking for a good dairy-free mozzarella cheese, once that melts well.

Just came back from two months in California, and the options there were amazing. My children have to be dairy free, but we were able to make them real pizzas for the first time in their lives there, (we live in Budapest) and they loved them. I know there are Vegan pizzas available here, but they are terrible. Any help finding basic blank pizza crusts and decent dairy-free mozzarella cheese would be greatly appreciated. Thanks!