This is apparently from some US TV food show that is currently airing; there’s Tony Bourdain, Brian Malarkey, this French chef Ludo Lefebvre, and … Nigella.

The video comes from a behind-the-scenes clip, posted by Bourdain, of Ludo and Nigella sipping champagne on a sofa:

Best. @nigella_lawson Clip. EVER. @chefludo speechless. #TheTaste moby.to/rnyy9m

— Anthony Bourdain (@Bourdain) February 12, 2013