Norikonoko in Berkeley.
Yoshi's used to do a very nice version but it's no longer on the menu (although many other things there are tasty).
I believe I had some good nasu at Gombei in San Jose, but I could be conflating that memory with Yasu, which is no longer there.
Norikonoko Japanese Rstrnt
2556 Telegraph Ave, Berkeley, CA 94704
193 Jackson St, San Jose, CA 95112
Yoshi's Jazz Club & Japanese
510 Embarcadero West, Oakland, CA 94607