I hope you don't mind @psychic-phone-pal that I answer your question in a post :) I feel like it maybe would be useful for more people and deserves to not be buried in the replies of one mod :3
Yes you are correct I make my restaurants more expensive via a mod, and I also add custom food varieties like caviar tartlets via the same method. Restaurant podiums pull their food options and prices from BCON's and Fway was kind enough to provide a template that adds some additional missing maxis foods, and also contains a tutorial.
You'll find the template and a PDF tutorial on how to add more in the download of "Mod Your Restaurant Podium".
It is super easy, if all you want to do is tweak prices of maxis food then Fway's file is clearly labelled and it's just a matter of tweaking numbers in a list :) Adding custom foods is also very easy, you just need to stay organized and do a bunch of copy-pasting.
If anyone would like me to do a short video tutorial of how to add custom food/edit prices, I could also do that. William's menu boards operate off a similar logic so if you learn one you can also handle the other :)









