The Stroopwafel is another iconic plane treat originating from northwestern Europe. United Airlines (UAL) began serving the waffle cookie with a caramel interior layer on domestic flights in 2015 ...

Its name translates to "syrup waffle" in English, but you can think of a stroopwafel as more of a cookie than a breakfast ...

Just like with the Biscoff cookie, the Stroopwafel has a very strong fan base that periodically clamors for its return on social media. The Chicago-based airline heard the fan base and has once ...