Gotta eat it to believe it. We’re partnering with 5 different chefs on 5 different burgers next week in honor of a #DecadeofShack. Available TUESDAY, JUNE 10TH only, at the Madison Square Park Shack in NYC, will be none other than David Chang's "Momofuku Shrimp Stack," a Shack beef-blend cheeseburger topped with a smoked and griddled shrimp patty, Momofuku Hozon Sauce, Bibb lettuce, pickled onion and salted cucumber.