The folks on Mindhub are buzzing about In-N-Out Burger's "secret menu," pointed about by LateUpdate.com blogger Adrian Rodriguez.

The menu is on the Web site, but not on the menu board in the restaurant, apparently. It includes things like the protein-style burger, wrapped in lettuce instead of a bun, and a grilled-cheese sandwich made from a hamburger bun.

Says Rodriguez:

"They say it's not really a secret, even though they call it a secret. But if it's not a secret, why don't they add it to the menu? They even got catchy names for some of these variations on their plain menu."

It appears there's a few more secret things not on the printed secret menu. A Flying Dutchman and a Lemon-Up anyone?

So why aren't these items on the menu? One would think it would be a good way to attract Atkins dieters or vegetarians. Unless this is some kind of marketing strategy to give loyal customers "inside knowledge" or some such thing.