Yum Yum Sauce=Mayonnaise and Sweet Mustard
Please tell me...what Japanese recipe books includes a recipe for such a sauce? None. That is the answer. ZIPPO!
So the fact that a Japanese Steakhouse, which yes, may be an oxymoron in itself, offers such a sauce is so incredibly condescending and insulting. You crazy Americans who think it is amazing, please realize, you are putting MAYONNAISE on your asian-esque food!
I would consider myself an expert on the House of Japan cuisine. It is something I have experienced multiple times (like, lots) and it has always been the same. Soup, good. Salad, good (sometimes two salads). Chicken and Steak, very good.
At Gengi, I got the same entree. The salad tasted fine; although I like the ginger dressing at HofJ a little better. The soup, tasted like straight up beef broth, which to me can have a bit of a rodent cage flavor. Like, it tastes like a gerbil cage smells. I had a couple slurps and was done. The steak was excellent. My dining companion had the scallops and they were just fine. The chicken was a little dry. Vegetables good. Bean sprouts, fine.
Interesting note: The servers have ear pieces like they are in the frickin' Secret Service. I imagine, "We are going to need some chicken and a steak...but this girl is a BITCH, so make sure it is a crappy piece of chicken." Of course I was not the bitch in this scenario. My chicken was fine!