Drakensang: The Dark Eye Equipment Database: Item Details
  Beer Storeroom Key

Value: 0
Weight: 0.001 stone

I managed to convince the innkeeper to give me the key to his storeroom. Maybe I'll find some clues that will exonerate Salina and lead me to the real perpetrator.

Where Obtained:
• Murolosh -- given by Innkeeper Bashur during the quest The Poisoned Beer