Looks like title is misspelled as Copper's instead of Cooper's.

If you, like me, can't get tobacco liqueur in your area for the Louisville Sour, I'd suggest the 100 Year Old Cigar; robust and reminiscent of it's namesake.

An atomizer really is a game changer for these types of cocktails. I've always used an atomizer for absinthe because I can't stand to waste it, but it's obviously even more valuable for Chartreuse. I keep atomizers of absinthe, Chartreuse, Angostura, and Laphroaig on hand. Practical but also always very cool for your guests!

My brother and I were just talking about this drink the other day. He said it would be cool if a bar took drinks from the 70's and 80's that were considered bad by todays standards and modified them. I brought up how NoMad did this with a few drinks including the Amaretto sour. Haven't had one in a while, I guess this is my sign.