Actor Bradley Cooper, who will be seen as a chef in his next film, tried to learn how to flip burgers at a fast food chain in preparation for the role.

The "Hangover" star decided to practice his cooking skills in London's Leicester Square branch of Burger King, Sunday, as part of his preparation for upcoming film "Adam Jones", in which he plays a chef training to get a third Michelin star, reports contactmusic.com.

And it seems the actor was a natural at the grill, with a source telling British newspaper The Sun: "Bradley was training alongside genuine Burger King staff. The aim was to learn the 'art of the flip', which he nailed fairly quickly."

"There was no real fanfare from him. You'd never know he was a big star by the way he spoke to people. He spent Sunday night learning the skills while the restaurant was open to the public and then filmed for most of the day on Monday," the source added.