At every tea expo we host, Yixing craftsmen come to showcase their works, and the purple clay section always draws the most visitors. So, compared to other tea wares like porcelain, what features make purple clay pots so irresistible to tea enthusiasts?

(1) Brewing tea with a purple clay pot keeps the aroma rich and lasting. The pot has a small spout, a tight-fitting lid, and a rough inner wall that effectively prevents premature loss of aroma. Over long-term use, a reddish-brown tea patina builds up inside. The longer the pot is used, the more tea patina accumulates, making the tea liquor more mellow and fragrant. Even when no tea is put in, pouring hot water alone into a well-used pot will still release a tempting tea fragrance—something other wares cannot achieve.

(2) Purple clay pots are neither glazed inside nor out, retaining tiny pores that offer excellent breathability without leaking water, along with strong adsorption capacity—unmatched by ordinary teapots. It helps retain the aromatic oils in tea that volatilize when heated to form a pleasant fragrance, increases the late-stage acidity of the tea liquor, and has astringent and antibacterial effects. This slightly delays spoilage and souring, the reason behind the saying "it can keep tea from turning stale overnight in summer."

(3) A purple clay pot retains heat for a long time. The inner walls contain many tiny air bubbles filled with still air, and since air is a poor conductor of heat, the pot offers excellent thermal insulation.

(4) Brewing tea with a purple clay pot makes it easy to hold and handle without getting burnt. The linear expansion coefficient of purple clay is slightly higher than that of porcelain, and since it is unglazed, there is no stress between body and glaze. After firing, the pot contains very little glass phase and has strong resistance to sudden temperature changes, giving it slow heat conduction. Purple clay pots can withstand extreme temperature shifts—even after being boiled at over a hundred degrees and immediately plunged into ice and snow, they will not crack.

Thus, when using a purple clay pot to brew tea, holding and handling it won’t easily burn your hands. Even in the coldest winter months, you can pour boiling water into it without fear of cracking, and it can even be placed over a low flame for simmering without breaking.