Bacon

Bacon was a meat originating on Earth made from pigs. It was often a component of a sandwich. The Tenth Doctor destroyed a Glutonoid with a toxic mixture flavoured with, among other things, bacon. (COMIC: The Glutonoid Menace)

Walker ordered a breakfast of eggs, bacon, toast, coffee, and rough-cut marmalade. (TV: The Sea Devils)

Vicki used the First Doctor's food machine to create a substance that tasted like bacon and eggs adorned with brown sauce. (AUDIO: 1963)

The Seventh Doctor cooked a breakfast of fried eggs, bacon, sausages and fried potato slices for Justine and Vincent Wheaton at Smithwood Manor. (PROSE: Cat's Cradle: Warhead)

When the newly regenerated Doctor demanded Amelia Pond "fry something" for him, and she made him a plate of bacon. He began eating but spat it out in disgust, asking Amelia if she were trying to poison him. (TV: The Eleventh Hour)

Bacon in a sandwich

 * Whilst on Earth in 1963 Ace ordered four bacon sandwiches during the Shoreditch Incident. (TV: Remembrance of the Daleks)
 * The Fourth Doctor enjoyed "marmalade and bacon in a sandwich squashed together just so" during his stay at Nest Cottage. (AUDIO: The Stuff of Nightmares)
 * Jack Harkness used a time store to save bacon sandwiches for a "year or two." (AUDIO: Golden Age)