Lasagna
Lasagne was a food - made with beef, tomato sauce, egg, pasta, and cheese - eaten on Earth. (PROSE: Stop, Thief!)
Gwen Cooper enjoyed lasagne. (AUDIO: Everyone Says Hello) Jack Harkness once heard Gwen talking on the phone to Rhys Williams about lasagne. (AUDIO: In the Shadows) After her first day at Torchwood, Jack told Gwen to go home, eat lasagne and kiss Rhys like a "normal" human being. (TV: Day One)
In 2011, Sophie bought Craig Owens a lasagne to eat on a Friday. The Eleventh Doctor improved it with hundreds-and-thousands. (PROSE: Stop, Thief!)
In 2013, Charlie Gibbs ordered seafood lasagne from The Pescadorian. (AUDIO: Eldrad Must Die!)
When Journey Blue told the people who were going inside the moleculon nanoscaler not to hold their breaths as the nanoscaler engaged, the Twelfth Doctor compared what would happen to a person that did hold their breath to lasagna that was microwaved without the film on top of the dish being pricked first. Clara Oswald said that the lasagne would explode, and the Doctor responded, "Don't be lasagne." (TV: Into the Dalek)
Sergeant Andy Davidson of Cardiff Borough Police enjoyed playing on his PlayStation while eating lasagne. (AUDIO: UNIT Dating)