It's supposed to be completely up to date. When the special list was created, all food items at and above r90 up to r99 (as 100's aren't counted for the Gourmet Club, if I'm correct) were added, after which every new (food) item that gets added by our

lovely

database editors is double checked to see if it's a Gourmet food and should be checked as such. If, however, one of these has a bad day and forgets it, there are always users that notice and it and make a comment in the MIA Item or Error? topic in the Items, Items and Items section.

So yeah, it's quite up to date =P