For SEO I would recommend HTML, with the option to download a PDF. That being said you should also consider how much time is wasted on doing it HTML. Can the company earn more money by spending their time on something else? I mean how often do people actually search for a certain dish when they are about to go out for dinner. My bet is that they are more likely to do a search like: "Italian restaurant in downtown Berlin" rather then "Broccoli slightly roasted in white-wine". Do you see what I mean?
Internationalized Domains and SEO
9/23/2011 When it comes to international SEO (especially within EU) there are many questions and myths. One of the myths I have heard most often is that you shouldn't use Special characters in domain names or URLs, since the search engines can't understand them. This is however of cause a false statement.