Yes, that Jäger.
Sure, the German bottle is most closely associated with college shenanigans. But once you take away the branding (and bury those unfortunate flashbacks), you'll find a sweet, complex herbal digestif. Jäger proudly touts the 56 herbs and spices in its formula and has many close relatives in the cocktail world. Jäger is significantly sweeter than a lot of its counterparts, but as long as you compensate for that in a cocktail, you'll find it is a lot more mixable than you might think. Just do yourself a favor and lay off the Red Bull.
Easy: Jäger Manhattan
The classic Manhattan: whiskey plus sweet vermouth. What does sweet vermouth contribute? Something sweet (obviously) and something complex and herbal. So we swapped in Jäger to serve the latter role. To balance that sweetness, we're upping the Angostura bitters and using a 100-proof rye for the whiskey base—we like Knob Creek.