[...]
Does anyone have a recommendation for a good thick-glass gaiwan? The
thicker and heavier, the better.

I *think* this is the same sturdy gaiwan that serves me reliably at work:

http://www.tenren.com/gljacupg.html

I bought mine at a bricks-and-mortar Ten Ren in New York.

/Lew
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Lew Perin /
http://www.panix.com/~perin/babelcarp.html
recently updated: Cha Qi