You've got to be full of passion to make it as a top chef. It's a highly skilled and physically demanding job that comes with long hours. Ruth Alexander talks to three celebrated and talented chefs from three different continents about the highs and lows of their careers. They tell Ruth why they love the job so much and whether chef culture has changed in the years they've been working in kitchens. Featuring May Chow, Chantel Dartnall and Sean Kenworthy. If you would like to get in touch with the show, please email: thefoodchain@bbc.co.uk Image: A chef in a white jacket sharpens a big knife in a professional kitchen. Credit: Getty images / Fertnig.