Wall Street's oldest steakhouse has a secret menu for billionaires -- here's what's on it

business insider Delmonico's, located just a few blocks away from the New York Stock Exchange in downtown Manhattan, opened in 1837 as one of the first sit-down restaurants in America. But while the restaurant is perhaps best known for its steaks, it also has a selection of food items you won't find on the menu. Called the "Secret Billionaire's Menu," these dishes will set you back quite a bit — there's a grilled cheese sandwich for $100, for example, and a golden twist on the classic black-an...