Opened for a special occasion. Ridiculous whiskey, in the best way. AFAIK the bottle I had is a mostly (or all) corn single grain, aged in ex-bourbon barrels... closest thing you can buy to a 40-year-old bourbon. Tastes closer to bourbon than to any scotch I've ever had, but incredibly delicate and rich; popcorn notes present, against a complex backdrop of oak. Like nothing else I've ever had, and I've had die-hard bourbon fans go gaga over this one. I'd buy a case if I could.