There are many who bemoan its snobbery - but the Michelin Guide is still valued by many. And love it or hate it, its draw as a marketing tool is undeniable: the awarding or removing of a Michelin star can mean fame or disaster for a restaurant. Step into the kitchens of top-class restaurants for a masterclass on what it means to be a Michelin-starred restaurant today, and the lengths to which chefs will go to obtain the coveted accolade.