Free beer. If host have licence for beer unlocked but you - as a player joined into the session - not, every time you try to press "unlock licence for beer" you will get free order of that beer.

We seemingly got infinite arkenstout no matter how much we worked out. I was the only one who could order it. We assume it happens when someone joins the hosts game so it won't work alone.

You get infinite beer if the host has the beer license and you don't