Bradley Cooper has shared plenty of onscreen kisses, but it's his smooch with co-star Daniel Bruhl in Burnt that is turning some heads.

At the Burnt premiere in New York City on Tuesday, Cooper gave ET the dirt on the buzzed-about scene that didn't exactly go Bruhl's way. The Spanish actor admitted that he was nervous about kissing Cooper on camera, and prepared for the moment by meticulously taking care of his hygiene. What he didn't count on was Cooper's food choice prior to shooting. Bruhl claimed Cooper ate hummus prior to getting up close and personal with his co-star.

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"I don't remember eating hummus, but I remember him saying that to me," Cooper told ET. "Yeah, I was a little embarrassed."

In real life, Cooper's been snuggling up to his supermodel girlfriend, Irina Shayk, who he snuck into the Burnt premiere, bypassing the red carpet.

Cooper reunites with his American Sniper co-star Sienna Miller for Burnt, and she shared with ET why they work so well together.

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"It just so happens that we get along and have good chemistry," Miller gushed. "We work in the same way. We're great friends, so it made sense."

In the movie, Cooper plays egotistical and unconventional two-star Michelin Chef Adam Jones. Jones always played by his own rules, which earned him everything he had, but eventually led him to lose it all. Now, he has to lean on the best of the best, including the beautiful Helene (Miller), to get him that third Michelin star that has so far eluded him.

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Burnt opens Oct. 30.