You can check the link below your posting where the moderator has graciously linked postings with "restaurants" in the title. A quick search on this Forum's search feature will yield even more results. Finally, Jobslinger will yield lots of helpful connections between MSCs and client types in your area.
Or follow the advice of the veterans and sign up for a minimum of 100 MSCs and you'll be flooded with opportunities.
Also, check out Mystery Shopper Magazine for the various restaurant articles.