Bradley Cooper is learning how to flip burgers

A source told The Sun newspaper: "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."

However, it's not just fast food chains that have been helping the hunky star - who is dating model Suki Waterhouse, 22 - perfect his culinary skills as he's also been taking advise from celebrity chef Gordon Ramsay.

The 'F Word' star, 47, said previously: "As well as giving Bradley a few top tips on cooking, I've taught him the most important thing he needs to know in order to get by in a kitchen - how to swear."

'Adam Jones' - which is being directed by John Wells - also stars Uma Thurman, Sienna Miller and Emma Thompson, and will be filmed in London until September 26.