Unlike Rikyu, though, Koetsu got his hands dirty, shaping the clay, carving it with knife and spatula.

CNN: ASIANOW - TIME Asia | The Subtle Magic of Koetsu

Like Rikyu before him, Koetsu worked with a family of potters whose name came to stand for a whole class of rough, low-fired pottery: raku ware.

CNN: ASIANOW - TIME Asia | The Subtle Magic of Koetsu