Menchanko Tei on east side has reopened
And that's exactly what I had, xigua! That, plus a glass of iced oolong tea - $13.95 incl. tax, plus tip. It's a pretty big bowl - you do get your money's worth, I guess.
Just by the way, I've found another quite good hiyashi chuka at Tokyo - Lexington between 39th & 40th - which is much closer to my office.