How do I clean the baking chamber of the Izzo oven?

A small amount of food residue on the bottom of "Biscotto di Sorrento" allow to burn. Before each start of work and during working hours, the base can be tapped with a pizza shovel to facilitate the removal of minor incrustations. Ash residues can then evaporate more easily. The volcanic stone baking surface can be washed when not hot. Only use water and a cotton cloth!