Burkus explains that the lid can warp and dust may enter, so
利休 liked to put something on it; a
香合 in the shape of a bird, for example. After 初炭, the host would come in with a
柄杓 to put a new weight on the
鶴瓶, and then take the
香合 with them. In this case,
香合 should be ceramic, as lacquer can not like the moisture. I certainly want to try this for a
茶事. Other things cannot be placed on it, though!