In America's earliest days, apples were one of the most abundant and readily available resources for spirit-making. Back then, hard cider was a cleaner alternative to water, so our ancestors were making and drinking plenty. Then, they decided to take it one step further.
Through a process known as jacking, these innovative imbibers created a spirit known as Applejack. To do so, they would freeze their cider, and when the water content had turned to ice, they would remove it, revealing a truly powerful spirit.
Today, our applejack-making methods are more refined, but at 100-proof, Barking Irons is as strong as it's always been, and it definitely ain't sweet.