What makes Ooni Karu awesome? ➊ Fueled by real wood or charcoal, Ooni Karu 12 cooks authentic wood-fired, stone-baked pizza in any outdoor space in just 60 seconds. ➋ Ooni Karu 12 is also gas compatible – simply order an Ooni Gas Burner attachment to extend your fuel options. ➌ Ooni Karu’s custom-designed fuel tray