I dunno...logic tells me that if I buy a certain type of steak of a certain size at the grocery store, the odds are pretty good that if I order that same size and type of steak at a restaurant, I should already know the nutritional information.
If you're really curious about it, you might ask what the steak was cooked in...
The last thing I want to do when I go out to eat is analyze the food. I can do that while I shop for groceries.
Well, that might be true for you, but there are lots of people who would like to know what's in the stuff they eat, even at restaurants.
Again, I'm not saying that we need a law--market forces have done a nice job of forcing restaurants to publish this information anyhow--but I'd like to see the holdouts step up to the plate and let people know the information so they can make an informed choice. After all, isn't the idea of a free marketplace predicated on each party having perfect information?