I don't know what they're called, just that I loved drinking genmaicha from an earthenware one at a restaurant recently... it sort of had a little finger-grooved area on the sides and was generally textural and nice to hold. About the size of a conventional U.S. coffee cup.
(Also, I'm trying to hunt down brown porcelain Asian soup spoons, if anyone knows of a particular place that has that color. Lots of white ones, a couple black ones, still holding out for brown.)
So... any particular name for the cups, or places online where you specifically recall seeing those, or darker Asian soup spoons? Thanks!