Olive

An olive was the edible fruit of the olive tree, a plant native to Earth. Olives had a range of culinary uses, from being served on a pizza to being immersed in alcoholic beverages as garnish and to enhance their flavor. 

20th century musician L.Q. Clemonds ordered a martini from the replicator aboard the USS Enterprise (NCC-1701-D) in 2364 with two olives "for the vitamins." 

In 2375, Nog had a Martini with two olives in Vic's Las Vegas Lounge. Kesha subsequently ordered the same, as a Makara fizz wasn't available.