Brown Sugar Bourbon 103 is created with the same recipe of BSB, but bottled at 103 proof. This is the bolder, badass version of BSB – a little less sweetness and a bigger kick of bourbon. The bolder, stronger version of BSB - Brown Sugar Bourbon® at 103 proof. This “High Altitude” Bourbon is flavored with natural brown sugar and cinnamon for a flavorful kick. Perfect for whiskey drinkers looking for something new.