Weetabix

According to the Twelfth Doctor, particle beams "probably taste[d] like Weetabix" to the Umbra. (COMIC: The Eye of Torment)

Behind the scenes
Doctor Who was used to promote Weetabix in 1975 and 1977.

The 1977 promotion included a television advert featuring a modified Dalek Supreme from Terry Nation's collection. This advert, in which the Supreme ordered all Daleks to find and exterminate all packs of Weetabix containing secret messages from the Time Lords, was suggested to be "the true beginning of the Time War" in The Dalek invasion of pop culture, published as part of Dalek: The Astounding Untold History of the Greatest Enemies of the Universe.