At Andrew Michael Italian Kitchen‘s monthly No Menu Monday dinner, there is a menu, but the diner does not see it until after the meal. As the courses are brought out, dinner becomes a fun sort of parlor game of guess-the-ingredient.
At the meal’s conclusion, each diner is given a copy of the menu. Seen below is the menu from last Monday’s special vegetarian No Menu Monday.

I have to admit, even with menu in hand, I’m still doing a bit of guessing.