Thanks to everyone for your input. I think Lynn is getting some great advice.
Lynn, I bet your head is just spinning at this point. You must be thinking; what do I do now! Don't worry, this is a process and it will take some time.
Let's start with the basics. Menu Designer and Jonathan are both on the same point. What makes you money. Money is what keeps you in business. So, the next step is to decide what items you need to feature to make sure you 1) make money and 2) impress people so they want to come back.
At the same time, think about all the items you have and try to eliminate the ones that are not profitable and the ones that cause headaches. Talk with your staff and see if you have items that are ordered very seldom and end up taking special care because they are not part of the normal flow of things.
Finally, it looks like you have letter size
triple menu cover. If you are not able to eliminate enough items then I believe you either have to go to legal size paper, or start using the back for your drinks and give yourself more space.
It appears that you really have two groups of customers; 1) the burger bunch 2) the Grandma's Cooking crowd. To help them both feel like they came to the right place you may want to consider a
book 3 menu cover. The book 3 menu will give you the same number of views, but you can have two pages for Starters, Soups and Salads, and Entrees and another two page spread for Burgers, Dogs, and Fountain Favorites.