I managed to pop by Hojo a few days ago, and tried out some of their teas and pots.
Teas i tried included their Phoenix Dancong Mi Lan Xiang, Taiwan Jin Xuan Milk Oolong, and another dancong which name i do not recall.
Throughout most of the session, the Kobiwako Hohin stood out to me the most. According to their staff, clay has a very high calcium content. Which makes water and tea "sweeter" (not sure how else to describe it). we even tried running water through it and then using the water for coffee, and there was a difference!
My opinion on it, is that the Kobiwako Hohin can add a certain sweetness to water, which in turn helps to give some teas extra body. However, when compared with a trusty gaiwan, i found that the clay absorbed certain characteristics of the tea as well, though to it's credit, not much. In terms of aroma, the Kobiwako clay did not seem to take away much as compared to a ceramic gaiwan.
So my final verdict on that Hohin... it's a great piece to have. and if u don't mind it tweaking your tea's profile a bit, even better. Heck u can even use it to pass hot water through before making coffee to make it better. So there's definitely a use for this piece one way or another. would be interesting to try it with WuYi rock teas though
Also managed to try a couple of their pots made from other clays, one of which was the Sado Mumyoi Clay Oxidation Fire pots if i remember correctly.
While the pots are BEAUTFIULLY made. I did feel that they took away more than i was happy with in terms of flavour and aroma profiles for the teas i was trying (as compared to the Hohin and ceramic gaiwan). perhaps those would've worked better with puer or liu bao teas.
Just my two cents