OK, restaurant reviews aren't the usual fodder here, but I'm going to make an exception. It's always struck me as paradoxical that for all the money up on Sand Hill Road, the culinary options are rather limited. Not that Quadrus and the Sundeck are bad, but they do get a bit repetitive.
About a quarter of the way up the Hill, behind the overpriced Shell station, is a little shopping center that a lot of people miss: Sharon Heights. Recently a new Japanese restaurant opened there, the Kaygetsu of the post title. On the recommendation of friends, my wife and I gave it a try last night for a celebratory dinner - our 25th(!) anniversary.
The title gives away that we think Kaygetsu is a great addition to the Sand Hill and Valley scene. We went for the kaiseki (set meal) option, since this opportunity is rare in the Bay Area, and were well rewarded. Without going into lots of detail, the offering does a great job of giving the many tastes in each course which tradition demands, with very sophisticated presentation. I'll particularly mention that the grilled salmon with rice cracker crust is awesome, the sashimi plate with amazingly luscious toro and specks of gold leaf might have come from an Iron Chef show, and the chef's delicate fish broth holds the whole meal together. We also enjoyed the sake sampler that gives a range of tastes of the traditional rice wine, before moving on to generous sized glasses of a favorite for more serious toasting.
Two of us, working hard at doing it up, went through $100 apiece, but that's likely near the high end. There are more modest a la carte and sushi bar options, and a lunch menu that I will be sampling sometime soon. Two thumbs up from the Due Diligence foodie department.
Thanks to Mochio Umeda and Scott Loftesness for the suggestion.