Pickled onion

Pickled onions were a prepared food found on Earth.


 * The Fourth Doctor specifically requested a pickled onion from Rorvik whilst they sat in the Gateway. Romana also ate a pickled onion. (DW: Warriors' Gate)


 * Mickey Smith had pickled onions (along with pickled eggs) in his cupboard. Jackie Tyler used them to kill a Slitheen; due to the vinegar and therefore the acetic acid in them, they could dissolve a Raxacoricofallapatorian's calcium-based physiology. (DW: World War Three)


 * Susan Mendes had a Gran on Earth who sent her pickled onions. She also left a jar of them for Alby Brook. (BFDE: Invasion of the Daleks)