Rye was the first Colonial American whiskey, and was the most popular spirit in the US for more than a century until it fell out of favor. Made in a classic Pennsylvania style at the Heaven Hill distillery in Kentucky, this has been aged for at least four years in barrel and bottled at 100 proof. To be called "Bottled in Bond" it also has to be the product of a single distillery, made in a single season in a single year.