In the tiled roof hut that i built based on your design i created a small furnace with a few clay tiles laid on top for cooking on.
Primitive technology tiled roof hut.
The hut is 2m wide and 2m long the side walls are 1m h.
The fired tiles were then hooked over the horizontal roof battens.
But the kiln allowed me to fire larger pots with a lower breakage rate than pit fire.
A trench was dug and covered with flat stones with a firebox at one end and a chimney at the other for draft.
This was inspired by the korean ondol or hot stone.
World touristar i built this hut in the bush using naturally occurring materials and primitive tools.
The kiln originally used for firing roof tiles for the hut was used to fire the larger pottery.
Originally i fired previous pots in small pit fires.
Earthenware may be placed on the tiles to cook.