I've used more of the liqueur than suggested by the folk at Jägermeister, as I feel the drink benefits from more of the liqueur's herbal rootyness, which...
I improved that one to my taste:
Instead of Jägermeister I used a lokal Bitter called Bullenschluck. Because the Ginger Beer was still very spicy I added some Orgeat. That made it nice and creamy.
Well nice, Simon … but:
Bullenschluck is very very regional Oldenburg near Bremen. I am sure other regions have similar bitters, as there are many many in germany. So honestly, nice move but maybe not available for everybody.
Instead of Jägermeister I used a lokal Bitter called Bullenschluck. Because the Ginger Beer was still very spicy I added some Orgeat. That made it nice and creamy.