Tead Off wrote:From what I've read, it was more than tea that they put into their tea bowls. Other things would make their way into the brew.
As far as I know, that’s pre-Tang and one of the methods of making tea during the Tang, but Lu Yu already speaks against it in his Chajing. He doesn’t mind adding a bit of salt, though.
By the Song dynasty, from which Jian ware bowls (»Tenmoku«) come, powdered tea (without supplements) was whipped to a froth with a tea whisk (»whipped tea«), a tradition the Japanese imported along with Chan (Zen).