Yes, probably 20 years ago. A mere moment to old-timers like us, Stu.
Of the major distilleries, Heaven Hill is the only one that makes and sells corn whiskey. Some of the others make it for internal purposes, but only HH makes it for sale. So unless the corn whiskey you see is from a micro, it's from HH.



Mellow Corn can be purchased at Ray's Liquor in the Milwaukee area, and it's not dusty, but current.
