We eat salad after the main course, but lately I've lost interest in serving it. Here's a reasonable-looking site which lists the vitamin contents of vegetables. You will notice that lettuce, the main ingred of most salads, doesn't even have vitamins.

http://www.healthalternatives2000.com/vitchart.htm

I have decided that the main role of lettuce is to sit forgotten in the fridge and spoil. Lettuce is a common source for food poisoning, so I've read. Its main role is to hold up the fattening salad dressing.

Now, a salad made of cut-up, home-grown tomatoes with green pepper or cucumber - now that's food. We eat it after the main course.