Spectacular!
Scarcity necessitated some substitutions:
45 ml Myer's rum
15 ml spiced rum
Didn't have Falernum, so skipped it :(
Followed Ben R's lead and used orgeat instead of honey syrup
Don't have a great way to make crushed ice, but I think it would have made it even better.

I sent myself an email to be delivered in December to remind me to scoop some snow from the backyard to serve it over