Onion

Onions are a mentioned-only consumable.

Mentions

 * Onions are described as being multilayered vegetable, eaten by members of the New California Republic Army stationed at Camp McCarran.
 * Onions are also used as a cliche to refer to those who know what they're talking about.
 * The recipe for brahmin noodle soup mentions onions.
 * Underworld residents mention that they smell onions from time to time.

Appearances
Onions are mentioned in Fallout, Fallout 2, Fallout 3, Fallout: New Vegas, and Fallout 76.