On Monday, journalists gathered at Hawaiian Airlines’ Honolulu headquarters for the carrier’s first global media day and the announcement that the airline is adding lie-flat seats to the premium cabins on its fleet of A330 aircraft.

During the event, refreshments were laid out for the attendees. And in with the coffee, water, fruit and trail mix were boxes filled with packs of Doublemint gum.

The gum seemed like an odd offering until it was explained that last November, when Hawaiian Airlines was celebrating the 85th anniversary of interisland passenger service, Doublemint gum was part of the festivities.

The reason: back in 1929, the first inflight amenity offered to passengers was a stick of Wrigley’s gum to help relieve ear pressure.

Hawaiian Airlines revived that tradition during its anniversary day celebration on November 11, 2015 by once again handing out Wrigley’s Doublemint gum to passengers (along with some other goodies) to the more than 12,000 passengers taking neighbor island flights that day.

But not all the gum Wrigley’s sent to Hawaiian Airlines for the celebration was used.

Not by a longshot. Which is why Doublemint gum is now there on the refreshment table at a lot of Hawaiian Airlines events.

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