These pottery are fired in the gas kiln reaching a temperature of approximately 2300 degrees. The heat transformed the powder/liquid glaze into glass and fused it with the clay during the firing process,the air intake was producing the unique features you see on these pots.
My high fired pottery are waterproof,lead-free,oven-safe,and dishwasher safe.
My high fired pottery are waterproof,lead-free,oven-safe,and dishwasher safe.