According to most sources… an accident. The story goes that Wild Turkey mistakenly blended small batch bourbon with high proof rye whiskey. Bottled at 45.5% ABV and this bottle came from Batch 303. The nose has a nutty, corn sweetness and grassy herbal notes. The taste is corn, sawdust and caramel. Very chewy, complex and good. Rye spice and cinnamon notes begin to push through and stay in the slightly hot finish along with peppermint.
It tastes exactly like you might expect a bourbon and rye blend to taste. Funny that. Must try in a Manhattan.