From The Daily Meal: Americans love their ice cream. As crazy as it may sound, the average U.S. citizen consumes roughly four gallons of ice cream yearly, according to the International Dairy Foods Association (otherwise known as the IDFA). That amounts to almost 20 pounds of ice cream for every adult and child in the country. Many may not realize that the history of ice cream in America goes back further than the country's existence. As the IDFA notes, the first mention of i