World-famous chef Daniel Boulud reveals his secrets to making the perfect burger

• Daniel Boulud is a world-famous chef.
• One of his most well-known creations, however, is the db Burger, which he calls "the Rolls-Royce of burgers."
• He recently showed us just how he makes it.

French chef Daniel Boulud hasn't changed the recipe for his famous burger in 16 years. The db Burger, served at db Bistro Moderne in New York, is so complicated that it takes three days to construct.

"It's the Rolls Royce of burgers," Boulud told Business Insider.

Yet his restaurant manages to churn out 120 burgers a day and is fast approaching the million-burger mark.

We recently met Boulud in one of his kitchens in Manhattan to find out exactly how this celebrated burger is made.