Trouble Brewin'

Trouble Brewin' is a side quest in Fallout 4.

Detailed walkthrough
Trouble Brewin' is a sidequest in Fallout 4. You get the quest from Rufus Rubins in the Hotel Rexford, located in Goodneighbour. Your task is to get Drinking Buddy, a modified Protectron/micro brewing machine, from The Shamrock Taphouse and bring it back so no one has to keep drinking the barman's normal swill. Notes located on Patrick's Terminal in the basement indicate that the robot may be a bit frail, and express concerns about transporting him to the buyer. There is no need to be concerned- send Drinking Buddy to the Hotel Rexford. He will continue there without supervision and eliminate any obstacles in his way.

Occasionally his Protectron programming may cause him to deviate to chase an enemy. Once the enemy has been lost or killed, he will return to his journey to the Hotel Rexford. You will not receive an updated quest marker until you arrive back in Goodneighbor.

Once installed at the Hotel, you can ask Buddy to tell you a joke, buy cold beer from him, or ask him where to find additional recipes. Additional recipes are located on holotapes found in local bars and breweries around the Commonwealth.