>>>> Hello. I'm looking into buying a bottle of single malt whiskey for my
professor before leaving grad school.

I would get a bottle of Aberlour A'Bunadh. If it turns out your professor
is a cognac drinker, then your professor will still love the A'Bunadh. And
in any case, the A'Bunadh is as impressive LOOKING as it is in top quality
and sheer silky pleasure to taste. Plus, you can get it under $50 some
places. You can't go wrong with it.