Alain Ducasse pursuing perfection

As one of the world's most decorated chefs, Alain Ducasse is known for his forensic attention to detail - from thrice-ironed tablecloths to hand-picked decor and cutlery.

But he has an unexpected weapon in his pursuit of perfection: He closely monitors social media to keep an eye on customer reviews of his culinary empire.

The 62-year-old is arguably the doyen of France's "grande cuisine". His eateries currently have a combined 20 Michelin stars, more than any living contemporary.