Mix flour, sugar, baking powder, xanthan gum, and salt together well.
In another bowl mix the yeast, warm water and 1/4 cup of the dry mix together. Let stand for 20 minutes. At this time put 1 tsp vinegar into a 1/2 cup measuring cup. Add enough hemp milk to fill and allow to “sour” while yeast is activating.
With an electric mixer, combine yeast mixture, milk mixture and flour mixture for 5 minutes. Allow to rest in a warm place for 30 minutes covered.
Preheat oven to 400 °F.
Spread olive oil onto a parchment lined baking sheet. The dough is VERY wet. You will not think it will ever make a pizza, but it will! Place 3/4 of a cup of dough into a pile and pat down to about 1/4″-1/2″ with wet hands. Wet hands are important or the dough will stick to you. Let set for 15 minutes.
Par bake the crust for 15 minutes. Top with your favorite toppings and bake for another 10 minutes.
The dough is VERY wet. Very. But it will make an amazing pizza crust! Trust me!
I have had trouble working with other brands of xanthum gum. I used Authentic Foods brand and have never had trouble.