Lettuce
From Memory Alpha, the free Star Trek reference
Lettuce was a type of vegetable from Earth.
Lettuce was one of the main ingredients of the BLT sandwich, along with bacon and tomato. (VOY: "Equinox")
In 2004, Loomis ordered a Double Superbeef at a Burgerland in Detroit without lettuce. (ENT: "Carpenter Street")
