What is Jianshui purple clay?
Jianshui *zǐ táo* is a Yunnan clay with high iron content, fired to near-stoneware temperatures. It yields a dense, fine-grained pot that gently softens tannins and enriches body — ideal for heavy teas.
How is Ru kiln crackle glaze formed?
Artisans apply a high-alumina glaze that contracts more than the clay body during cooling, producing a web of hairline fissures. These cracks are initially invisible but darken as tea pigments seep in.
Which teas pair best with a Jianshui teapot?
Roasted *yán chá*, *shú pu'ér*, black tea (especially Yunnan *hóng chá*), and aged white teas. The pot’s heat retention and mild porosity round sharp corners without muting aroma.
How do I care for a Ru kiln gaiwan?
Rinse with boiling water only; never use soap. Dry with a soft cloth. The crackle will stain naturally — that patina is prized. Avoid stacking; store upright on a shelf.
Does Jianshui clay need seasoning like Yixing?
Yes, though more subtly. It absorbs oils slower than Yixing’s porous *zǐ shā*, so dedicate it to one tea genre for the first two months. A gentle patina will form inside after 15–20 brews.
Why choose Jianshui over Yixing?
Jianshui pots are typically denser, which can give a rounder mouthfeel and more pronounced sweetness with certain teas. They’re also less reactive to abrupt temperature changes, making them forgiving for beginners.
Is Ru kiln glaze food safe?
Absolutely. Ru glazes are lead-free and high-fired above 1200 °C, forming an inert glass. The crackle merely provides surface texture; it does not leach heavy metals.
Can I use the same pot for different tea families?
You can, but the crackle or porous clay will carry faint memory across brews. Dedicate a Ru gaiwan to one tea category for the most transparent cup. Jianshui is more forgiving, but still best paired by roast or oxidation level.