Dill weed

From Memory Alpha, the free Star Trek reference

Dill weed is a herb which is indigenous to the planet Earth.

In 2284, James T. Kirk used dill weed to add flavor to Ktarian eggs, a favorite breakfast dish of Kirk's lover at the time, Antonia. Kirk was preparing the meal for Antonia, in order to soften the blow of re-joining Starfleet.

In the Nexus, Kirk revisited the day he told Antonia he was leaving. When Jean-Luc Picard found him there, Kirk asked Picard to bring the dill weed to him. (Star Trek Generations)

Neelix used a little dill weed to flavor scrambled Porakan eggs, along with a touch of rengazo. (VOY: "Flashback")