Student chefs display a certificate of Guinness World Record for the biggest cheesecake of the world in Mexico City, capital of Mexico, Jan. 25, 2009. The cheese cake, with 2.5 meters in diameter, 55 centimeters in height and 2 tons in weight, was made by 55 chefs and 5 student chefs and cost 800 kilograms of cheese.[Xinhua]