Oops... I should probably clafiry... I was referring to restaurants. I probably dropped this in the wrong forum, but it somehow didn't seem appropriate for restaurants, since it's a general question regarding supply.
Again, it's not a matter of not being able to find it at all. I know of a few places where I could go tonight and find some (and in any case, my craving will be thoroughly satisfied shortly, as I'm going to Japan next week

). It just doesn't seem as widely available lately. The most likely explanation is that it's just a matter of perception on my part, but it seemed pervasive enough that I started to wonder if it really was just chance or if there was some other factor at work.
Bob-san is my usual haunt, I hit it once or twice a month, and I can't remember the last time they had any, despite the fact that it's on the menu. I know I've been to at least two other places in Chicago in the past six months, neither of which were remarkable enough for me to remember them, now, and none of which had toro. And I couldn't even get a hold of any while visiting Nobu in Las Vegas a couple of months back.
I'm not looking for restaurant recommendations. If it goes on much longer, I'll use it as an excuse to finally get to Katsu

. It just seemed rather odd, and I was wondering if anybody else was having the same experience, and if so, did anybody know why?
These are the things I ponder at 3:00 in the morning.
Dominic Armato
Dining Critic
The Arizona Republic and
azcentral.com