Mostly they sit on a shelf and look pretty...and get lightly dusted. But I
have used the kyusu and small teacups for lower temperature teas (none of my friends are fans of Japanese teas). I'm always afraid of wearing off that gold, so they're washed very gingerly.
The coffee pot has been used to serve hot chocolate since it holds so much and keeps it warm for quite a while. The handled coffee cups were used quite a bit by the previous owners and are not something I would have bought because they're not exactly pretty, but they MATCHED so I HAD to have them

. The pot, 4 cups and saucers, creamer and lidded sugar were only $60. So yes, I HAD to buy them.
Now I'm thinking I should get some of the Sincha everyone here keeps talking about just to celebrate this set.
"Top off the tea... it lubricates the grey matter."
(Jerry Ledbetter, "Good Neighbors")