- The Ooni Karu 12 cooks a 12" pizza in just 60 seconds, so you are eating hot, fresh pizza in no time- Use wood or charcoal for a traditional wood-fired taste, or attach a gas burner (sold separately) for easy cooking- Enjoy a crispy base every time, thanks to the cordierite baking stone that holds heat well- Its chimney cap keeps the rain out, so you can cook in the garden without faffing about if the weather turns