Crack has made its way from Brooklyn to Canada over the years. Christina Tosi and the team at Momofuku are making sure an addictive namesake crosses the border, too -- and no authority is giving them a hard time. The Crack Pie, which is a sugar high, has become one of New York's most celebrated dessert items. It is among the habit-forming treats available at the newly opened Momofuku Milk Bar in Toronto.