Coarse pottery variable glaze tea roasting stove, the utensils are made of clay with high iron content. They look rough, but they are soft to the touch. The secondary roasting of tea leaves reduces the moisture content of tea leaves and enhances the aroma of tea leaves. Usually depending on the material of different utensils, the baking time is about 3-7 minutes, after stirring and waiting for the tea aroma to be released, it can be brewed. Heating with candles.