We All Scream for Ice Cream

We eat it in cups or cones. We drink it in sodas or shakes. We like it slathered in hot fudge sauce, wallowing in whipped cream, or balancing atop a slice of pie. We love it all year round.Ice cream was once so rare and expensive that it was considered the dessert of kings. So, how did this treat for the elite become America's favorite sweet?