A retail store at the CambridgeSide Galleria mall in Cambridge, Mass., advertises holiday sale, Monday, Dec. 24, 2012. Michael Dwyer/AP hide caption

itoggle caption Michael Dwyer/AP

Christmas chocolate and sweets on display at a Christmas market at Piazza Navona on Dec. 20 in Rome. Alberto Pizzoli/AFP/Getty Images hide caption

itoggle caption Alberto Pizzoli/AFP/Getty Images

Many Americans are familiar with cornhusk-wrapped tamales. But those aren't my favorite. Chicago Tribune/MCT via Getty Images hide caption

itoggle caption Chicago Tribune/MCT via Getty Images

Tourtiere is "one of Canada's better contributions to the culinary world," says Thomas Naylor, executive chef to the Canadian ambassador to the U.S. Larry Crowe/AP hide caption

itoggle caption Larry Crowe/AP