Restaurant Web Portal
This is a web portal because an iPhone user cannot reach these menus, because the main interface of the following websites are flash-based. Great for desktop users, bad for mobile users. Frank Bonnano, I love you, but this needs to stop.
So, what you want to do in this search engine is include "filetype:pdf" without the quotes. This will allow you to search for menus on restaurant websites. Unfortunately, I cannot add this by default into the search box per Google Terms of Service.