Who knows how to make an oven for hanging oven bakery?

homemade a baking food utensils, with an ordinary iron pot, outside with a mixture of grass, mud and white ash paste on a thick layer, in the pot on one side to open a fifteen centimeters or so of the mouth, the pot buckle over, the following with charcoal, and so on to the pot to burn to a certain temperature, in the inside of the pretzels, the outside of the hit with the flower knife and the sugar thinning sesame seeds on the cake pasted to bake can be.