- Fireball Cinnamon Whisky is the fastest-growing big brand of liquor in America
- The liquor has dethroned Jagermeister as America's party shot of choice
- Whisky expert: "Fireball is an incredible phenomenon. The growth ... has just been astounding"
(CNN)When drinkers in Clayton's, a beachfront bar in South Padre Island, Texas, belly up for a round of shots, bartender Casey Belue can usually guess what they'll order.