By Gigi Douban
Originally published on Thu February 21, 2013 6:06 am
When you're trying to decide where to eat, knowing what's on the menu is important. But for restaurants trying to bring customers through the door, what's not on the menu is just as important.
Secret menus aren't new. In-N-Out Burger has had one for years. But experts say more companies are now adding secret menu items, which are even catching on overseas in places like the United Kingdom and Singapore.
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