Ghouls, irradiated humans found throughout the Fallout universe, do not have specific dietary requirements for sustenance through drinking. Unlike living beings, their irradiated state grants them a form of undeath, mitigating the need for traditional hydration. However, they are frequently observed consuming various liquids available in the post-apocalyptic world.
The ingestion of liquids serves less as a necessity for survival and more as a habitual or opportunistic behavior. Water, being a scarce resource, is often a target, as are alcoholic beverages and even questionable fluids found in the wasteland. These actions suggest a lingering habit from their pre-ghoulified lives or a coping mechanism for the harsh realities of their existence. The choice of liquid can also indicate the environment they inhabit and the resources available to them.
