If spoken to, Olda will say that her husband, Horgeir, is a drunk and has a spot nearby where he hides his beverages. She also says that the cache is guarded by wolves. After that, she asks the Dragonborn to retrieve the Dragon's Breath Mead from its hiding place and bring it to her, because it is his favorite. She says all the other beverages can be taken, but she wants the Dragon's Breath Mead.
Head southwest, but stay north of the river on the map. There will be a small cave guarded by three wolves. The beverages can be found in a crate behind some bushes inside the cave. There are several wine bottles, Nord Mead bottles, and one bottle of Dragon's Breath Mead.
When brought back to Olda, she gives a reward of 500-750 .
Alternatively, if the bottle is given to Horgeir, he thanks the Dragonborn for saving it from his spiteful wife and teaches a one-point Blockskill increase as a reward to help "block a punch that might be coming from an angry spouse."
To get the mead back after completing the quest, pickpocket the mead from either Olda or Horgeir, depending on whom it was given to.