A jar of mustard (left)
Mustard was a Human condiment made primarily from the ground seeds of the mustard plant.
Mustard was served, alongside ketchup, salt, and pepper, at the Pine Tree Bar and Grill in Carbon Creek in 1957. (ENT: "Carbon Creek")
In 2367, while re-enacting a scene from A Christmas Carol on the holodeck of the USS Enterprise-D, Lieutenant Commander Data, as Ebenezer Scrooge, told Jacob Marley's ghost that he didn't believe in him, for "You may be an undigested bit of beef, a blot of mustard, a crumb of cheese, a fragment of an underdone potato." (TNG: "Devil's Due")
Sisko's Creole Kitchen offered shrimp remoulade: gulf prawns with a dipping sauce of mustard, capers, shallots, and onions, as a special in 2372. (DS9: "Paradise Lost")
When Jadzia Dax and Worf briefly canceled their wedding in 2374, Miles O'Brien ordered a double Altair sandwich, with no mustard. (DS9: "You Are Cordially Invited")
Appendices[]
Background information[]
A bottle of Klingon mustard at Quark's
Art Department Coordinator Penny Juday had a prop bottle of Klingon mustard made to feature in Quark's Bar on Deep Space 9 during the show's first season. (Star Trek: Deep Space Nine season 1 DVD special feature "Secrets of Quark's Bar")
In the first draft script of VOY: "Caretaker", Tom Paris asks Captain Janeway to order him a hotdog "with only mustard as a condiment", saying he is a "purist."
Apocrypha[]
The Strange New Worlds short story "Living on the Edge of Existence" states Benjamin Sisko likes his hot dogs served with ketchup, mustard and relish, the buns toasted and the franks grilled.