Jennifer Lawrence went about kissing Chris Pratt onscreen in Passengers a little differently than when she locked lips with Liam Hemsworth and Josh Hutcherson while filming The Hunger Games movies.

Pratt and Lawrence appear on the Friday episode of the U.K. talk show, The Graham Norton Show, and the Oscar winner opens up about the steps she now takes to make sure her breath is OK when she’s shooting a kissing scene.

“When I had to kiss Josh and Liam in The Hunger Games, I was like, ‘Who cares?’ and I’d eat mustard and tuna,” she quips. “And then I did American Hustle with Christian Bale and I was like, ‘Oh damn,’ and I was really clean and ate lots and lots of mints.” When asked how she prepared to smooch Pratt for their intimate scenes, she adds, “With Pratt I definitely ate mints!”

Passengers, which hits theaters Dec. 21, is set in a spacecraft that is traveling to a distant colony planet and transporting thousands of people, but has a malfunction in its sleep chambers. As a result, two passengers (Pratt and Lawrence) are awakened 90 years early, and strike up a romance.

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