I hope nobody minds my adding photos which are essentially the same as G Wiv's! Here are my memories of the evening, which started around 7ish and lasted until, oh, 11 or 11:30?
First we went to Katsu, where Charlotte scored a rockstar parking spot. Katsu and his wife are both charming, especially Haruko, who asked where else I'd be eating while in Chicago and discussed how many pizzas she could consume.
The meal began with a salad of soybean (I am 99% sure) sprouts and abura-age (deep-fried tofu pockets, the ones that are simmered in a sweet soy-based sauce to make inari sushi) slices, dressed with a very cool and refreshing soy and vinegar sauce of some sort. Even though it was basically just an amuse, I really enjoyed this and would like to make it at home for lunchboxes.
The next thing to appear was, I believe, the sushi and sashimi. So, photo first, then fish-by-fish through the plate:
Starting at the near side we had giant sea scallops from Seattle as nigiri, with a yellow roe on top. I've never eaten raw scallops before, and these were meltingly soft and tasted like the sea. They have probably spoiled plain ol' scallops for me. Unfortunately I was so busy enjoying the scallop that I didn't really notice the rice, although that is probably not necessarily a bad thing. As you can see, though, the scallop was cut quite large and concealed the rice altogether.
Next: uni. When we were ordering, G Wiv asked if I liked uni, and I somehow heard "unagi" and said yes. I'd never eaten uni (for the same reason I'd never eaten raw scallops: no source I trusted), so I've got no basis for comparison, but it was really delicious. Briny and... something that I picked up when I exhaled through my nose, probably just more briny flavor. For me the piece was a little bit too large; I would've liked it to have been smaller because I felt like it was in my mouth just a tad too long. Then again, I'm a slow chewer. It was a fantastic taste, though.
Next, the salmon sashimi, which put all other raw salmon I've had to shame. I think the photos of this salmon tell you everything you need to know about it.
I can't quite remember the other two sashimi; one is bluefin, I believe. They were also very good; exactly the right temperature and a tender mouthfeel.
Next, nattou maguro with nori strips:
I've been eating nattou fairly regularly but haven't really fallen in love with its taste and texture. However, this dish may have converted me. The contrast in texture between the soft tuna and the sticky, slimy nattou was amazing.
Nattou dish number two: agedashi nattou:
Agedashi dofu is one of my favorite dishes; I love grated daikon together with shouyu and dashi and they went equally well with the nattou stuffed into an abura age pouch. It was topped with kaiware (radish sprouts) and had nametake mushrooms in the broth; as G Wiv mentioned, there was no nasty limburgeresque taste to the nattou in this preparation.
The yellowtail jaw (hamachi kama?):
I love fish collar, and this was a very simple shioyaki presentation (just salt grilled). Katsu squeezed the lemon over the fish and poured soy on the grated daikon. The pickled ginger (right?) was very tangy and hot. The fish was cooked perfectly, in my opinion.
Pumpkin tempura:
I assumed this was kabocha tempura, or Japanese squash, but Katsu appeared at the table and said it was special, because it was American pumpkin tempura. I would expect to see this more in the fall than in the spring, but since the weather was cold and rainy I didn't mind it at all. The tempura was executed well, with a light, crispy crust and perfectly-cooked pumpkin, still with a little bite to it.
Next, beef tripe, including an Action Shot of the pumpkin tempura being dipped into its accompanying sauce:
Another thing I'd never eaten before: tripe. This was simply grilled and really was lovely. Its texture reminded me of squid in a pleasant way. If you're going to try tripe, I would recommend this preparation.
After the tripe we had beef tongue:
Paper-thin, grilled, salted, with a squeeze of lemon, which brought out the extremely beefy flavor of the tongue.
Finally, some magically sweet oranges; when we mentioned how amazingly good they were, Haruko informed us that it was because Katsu had prayed for them to be good.

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