A Jameson
It really is ace, though
I am not a big "mint" guy, and for some reason, that's what "eucalyptus" translated to in my head - but this is definitely not that.
If you've ever had a Halls menthol-lyptus cough drop, you're about 85% of the way to this flavour - although this is a much fresher feeling, I think. Whatever it is, there's something about it that pops, that's for sure.
Anyway, I love this brand (Guarana Chili Boost is also a knockout flavour from them, if you like Red Bull and burning sensations (which I do)), and this one is being upgraded to "buy a roll next time" status.