Controlling Bottom Charring on Biscotto di Sorrento vs Cordierite Stones at 485°C
Ovens & Heat PhysicsWhen firing standard cordierite stones at 480°C–500°C in my portable outdoor gas oven, the base of my Neapolitan pies scorches black within 45 seconds while the top cornicione is still raw. I switched to a 30mm porous Biscotto di Sorrento clay floor. Here are my thermal conductivity readings and thermocouple measurements showing why low-effusivity volcanic clay allows a 90-second bake without acrid floor burn.