I live near La Crosse, WI, which holds their own Oktoberfest each year. It's happening now.
In recognition of that, I give you this helpful spell, which will find not only lager, but any and all alcoholic beverages within range.
Enjoy!
Edit: Oh, tired brain forgot to delete a paragraph from another spell when copying and pasting the formatting. It has now been fixed.
2022-10-01: Another update. This one adds higher level casting (longer duration for longer pub crawls), and puts in limits so it can't be easily abused as a tracking spell (by putting a drop of rare alcohol on someone or slipping them the tiniest vial with a few drops in it).