For Christina Tosi, Building a Dessert Empire Is Not All Milk and Cookies
New-employee orientation at Milk Bar is a little like the first meeting of a support group devised by Tony Robbins and Willy Wonka. The 30 people sitting on folding chairs were in for a treat on this January morning in Williamsburg, Brooklyn: an appearance by Christina Tosi, who a decade ago conjured up the first…