Bacon

Bacon was a food originating on Earth. It was made from pigs. The Tenth Doctor destroyed a Glutonoid with a toxic mixture flavoured with, among other things, bacon. (DWBIT: The Glutonoid Menace)

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

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

When the newly regenerated Doctor demanded Amelia Pond "fry something" for him, 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. (DW: The Eleventh Hour)

Bacon in a sandwich

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