The decision to stock the cookie was a total hit. "It leapfrogs anything we've ever served on board," says Dan Mord, general manager of domestic product design for Delta. With their many years in the in-flight food space, neither he nor his colleagues are aware of any other success of the same magnitude. "It has become an iconic part of the Delta brand itself." The airline has made some tweaks to the cookie, though: In the late 1980s the airline served the same .22oz single cookie found in Europe, but in true American fashion, Delta now serves a bigger .9oz double pack of Biscoff, each cookie emblazoned with Delta's name.
Customers, smitten with the gingerbready treat, deluged Delta headquarters with calls in an effort to stock up on their own supply. Others mailed letters to the cookie company using just what was listed: the city and ZIP code (which, surprisingly, the post office did forward to the company). The most successful fans called Information and paid for a long-distance call (remember those?) to the cookie's distributor, Gourmet Center, to find out how to purchase the cookies, says Gary Payne, the former general manager at Corona-Lotus (the company's American arm).