By not applying glaze on the inside, the surface of the teapot is uneven, which moderates the astringency, making the tea tastes milder and more mellow. 

As the teapot is used the surface of the teapot's color will slowly deepen overtime. The built in hand crafter strainers are at the base of the spout which works as a strainer. Fine tea leaves/powders can pass through, the adding traditionally textured mouthfeel to the cup. If you would like a clearer cup, pour the tea through another strainer before serving serve.