I suggest you first look at the categories of the menus. eg main, sides, deserts drinks etc. Altenatively mentally number them page 1 page 2 page 3 etc.
Create a mind map with one of the categories in the middle then draw the titles of each menu item (note how many there are for that category) draw quirky images that will help trigger the recall of those menu items. Next stage pick the easiest menu items to add the ingredients to the mind map. I suggest you make up a story to help link/remember the ingredients, funny, rude or outrageous will help you to remember it better. Remember to get visual. If your story goes something like the lettuce kissed the mayo then in your minds eye that animated lettuce is probably wearing the red lipstick and has long eyelashes to boot.
Depending on the number of categories you'll have one mind map for each (it will help you to visually recall the images you created as well as reading the information)
As suggested do it in stages. First concentrate on learning the names of the menu items in each category and then the ingredients. Avoid building the mind maps all in one go. Do a bit for each... coming back to look at it again helps to aid your memory. When you build up the ingredients look at tackling them in groups of three... putting the mind map aside for at least 10 minutes before you work on the next lot. It will probably pay to build the mind maps over a period of a few days if possible.
Alex