Mix all dry ingredients together.

Add warm water.

Mix until ingredients are fully incorporated.

Cover with plastic wrap and let rest 6-12 hours (I let mine rest for 12 hours while I slept).

Preheat oven to 450F. Place your cast iron skillet in the oven as it preheats.

Pour rested dough onto well-floured surface. Form into ball. Allow to rest for another 30 minutes.

Cut an X on the top of the dough ball.

Bake covered (with lid or aluminium foil) for 25 minutes. Then uncover and bake for an additional 12-15 minutes or until the crust is golden brown.