Angel's Envy is Kentucky Straight Bourbon Whiskey that has been finished in port pipes, which is unusual for bourbon but common for scotch. It is the brainchild of Lincoln Henderson. Angel's Envy apparently skirts a line with respect to the arcane legalities of American whiskey labeling, as the Federal Standards of Identity for Bourbon are pretty strict as to what you can call "Bourbon." This is why the bottle clearly indicates how it has been finished, to avoid any miscommunication that would defy those standards.