Garrison Brothers Cowboy Bourbon is made from organic Panhandle corn, soft red winter wheat grown at the distillery, two-row malted barley and ultra-pure Hill Country rainwater. It has been aged in North American White Oak barrels for four years, making it the oldest bourbon ever produced in Texas, and twice as old as the 2013 release of Garrison Brothers Cowboy Bourbon. Whereas the 2013 release was packaged in small 375 ml bottles, the new release is bottled in 750 ml bottles. This bourbon is barrel proof, unfiltered and uncut, weighing in at 135 proof or 67.5% ABV. As such, it is not meant for the faint of heart, for making cocktails or for heavy drinking. It is to be sipped and savored slowly in moderation.