Take it slow That's our secret. We start with a minimum 20-hour fermentation that gives our crust its airy texture and depth of flavor. We finish by flame-firing our crust at 1000 degrees to seal in the incomparable taste. Portabella, Shiitake, and Cremini with caramelized onions, our Mushroom is crafted to reveal the subtle sweetness and umami depth in every bite.