The booze still requires a raider settler to be assigned to it, after which it will generate a small amount of happiness and deposit a small amount of vodka into the workbench daily. It is similar in appearance to a boiler chemistry station, referencing the distillation process that vodka is produced with. The still can produce anywhere from 1 to 3 bottles of vodka.
The booze still can only be built once the perk Wasteland Warlord has been achieved, and can only be placed in raider-controlled settlements.
Wasteland Warlord Rank 1
Booze still (1)