The Slurpee is arguably the most popular frozen drink in the world. Approximately 7 billion cups have been sold in more than a dozen countries, and one made it to space. Hear the story of how an embarrassing mistake led to a flavor craze fortune.

In the 1920s, Kansas farm boy Omar Knedlik ditched his plow for ice cream, successfully selling it out of stands and trucks. Soon Omar spent his modest fortune on an old Dairy Queen. Luckily, the DQ was barely operational, and Omar’s risk became his greatest reward.