Are You a Chef's Worst Nightmare of a Diner?

OK, so you're vegan, gluten-free, paleo, or whatnot. At fine-dining establishments, it's much more courteous to voice these restrictions when making a reservation. Otherwise, call ahead to see if the restaurant can accomodate you. Those who have worked the line know how difficult it is to make an off-menu item for a specialty diet. It disrupts the flow of the kitchen and is annoying, and you may end up with a plate of steamed vegetables.