I just returned to Jai Yun last night after having gone for the first time 5 months ago. In Janurary the prix fixe menu offered a ridiculous number of options, $35/45/50/55/65/75/90/100/115, or something like that. We wondered what the difference would be for gradations of $5, and ended up ordering the $50 menu for 5 people.
There were two other parties in the restaurant and certainly we were all getting the same things, but perhaps in different amounts. At the end of the meal, we got a fancy cooked fish and a roast pork entree that one of the other tables got while the other didn't. Had the other two parties ordered $50 and $35 menus? Does what you get depend on which menu you order, the number of people in your group, or both?
We thought we'd get more information last night. There were four of us and we ordered the $45 menu (since January they've blacked out several of the finer gradations on the prix fixe choices, so now you choose among $35/45/60/75/90/100, I think). Again there were two other groups and I don't know what ordered, but one was a group of 4 like us and the other was a group of 6.
- once again, all three groups got the same dishes for most of the evening. Our table got somewhat smaller portions than we'd gotten in January.
- the dishes were very, very similar to what they'd been in January. A few ingredients had been swapped in and out, but for the most part the menu was identical.
- this go-round we were the "odd table out" on the final two entrees--which appeared to be the same final two we were served in January.
So by spending $5 less per person, with one fewer person, we got noticably smaller portions and missed out on the last two, most substantial dishes. Most of our group was hungry when we left the restaurant, having spent over $200 on dinner.
The food was hard to distinguish from one visit to the next, though both times it was very good.
My best guess for how the menu works at Jai Yun: It's an auction system, where you do best if you can just barely outbid the other tables in the restaurant on that night. As has been mentioned on the board, a group of 5 or 6 seems to be preferable to smaller groups...