Why is my Alto Wine a quest item?

I've got Alto Wine in my inventory that's apparently flagged as a quest item. I can't drop it, and I can't drink it, and every time I pick up another Alto Wine (which I now dread) it adds another 0.5 units of weight I can't get rid of. I even went so far as stealing a bottle of Alto Wine and having the guards confiscate my stolen property to try to get rid of it - no luck.

Is this a bug, or is it actually for a quest? Which quest? I'd like to get rid of this.

Solution 1:

Yes, this particular bottle of Alto Wine is related to a quest that you will come across in the game.

It's called "A Night To Remember" and can be picked up at any tavern.

Check out this link for more info (If you don't mind spoilers):

http://www.uesp.net/wiki/Skyrim:A_Night_To_Remember

Try doing that quest and see if it fixes your issue?