Marshmallow
The Eighth Doctor once suggested that "toasting marshmallows" was one of the funny moments of camping. (PROSE: Grimm Reality) The War Doctor mentioned them in a list of "some of the finer things in life" he intended to teach Cinder about. (PROSE: Engines of War) After taking Clara Oswald to ski on Isen VI, the Twelfth Doctor said he'd rather stay "in the TARDIS with a nice mug of Bovril and melted marshmallows". (COMIC: Terrorformer)
At least to Jenny Everywhere, the Pinguis Bibendum and Puff Tremayne resembled "great big sugar-bag-sized, fluffy marshmallows". (PROSE: A World of Pure Unimagination [+]Loading...["A World of Pure Unimagination (short story)"])