This dual chamber oven Della Nonna is an oven with cooking chamber entirely lined with refractory bricks, which allows you to cook food in the oven as a time without having to turn the food, in fact, this type of system is heating the roof twice as to pavimeto and has even cooking throughout the room. The bottom chamber is where you add the wood and start the fire. This allows the top chamber to heat up and not get messy with firewood debris. A very clean alternative to the single chamber ovens.
This result was obtained because the oven is manufactured with different shells where it circulates the air, the hot air tends to rise upwards and refractory bricks make a barrier and retain it. In this way the distribution of the thermal field inside the chamber is almost uniform.