Can you drink tea from a 10 or so dollar Jianzhan

Yes you can. The main ingredients of traditional Jianjian glaze are ore and grass ash, and these glaze formulas are five-toxic. Jianzhan is fired at a higher temperature of 1280 degrees Celsius or more to oxidize and play off the heat-intolerant impurities. There is no need to suspect that cheap Jianjian has added heavy metals that are harmful to the human body, and these do not help the color of the Jianjian glaze.

Can you drink tea from a 10-something Jianjian

The three components of traditional Jianjian glaze are the glaze base, the color generator and the co-solvent.

The iron oxide component in quartz is the color generator, and the co-solvents are talc and grass ash, which lower the melting point.

These substances become iron crystalline patches when fired at high temperatures, forming their own colors and patinas.