On April 22, the world’s top chefs will team-up to serve the ultimate meal: the Dîner des Grands Chefs. At the third annual occasion of this Relais & Chateaux event, 600 guests will savor cuisine from renowned chefs including Michael White of the United States, Yoshinori Shibuya of Japan, Enrico Cerea of Italy, and more. This year’s installment will take place in London at the Old Billingsgate—once the world’s largest fish market—overlooking the Thames River. The 45 participating chefs will collaborate in …