Hotdog is one of the most common and popular food in the U.S. We make it by cutting a long bread in the middle and putting a sausage in it, and then heating it before eating. Hotdog is sold everyweere - not only normal food stores, but also cafeterias, restaurants in museums, at the gate of a park or a school, theme park, or even in some moving cars on the street. According to some surveys, it is reported that nearly 10 billion hotdogs are eaten in America per year.