Mirren Longbeard wants you to bring him 1 Nethergarde Bitter. You must also attain Friendly reputation with Honor Hold to complete this quest.
So you want to gain our trust? I don't trust many people these days.
We lost one of our own not long ago to the arakkoa. It's got me a bit on edge.
Tell you what, if you can prove your loyalty to Honor Hold and... bring me a mug of Nethergarde Bitter... yes, that sounds rather good about now... I'll have a deal to offer you then.
Bernie at Nethergarde Keep keeps the bitter in stock.