Coconut
Two Coco-no-nos, on the half shell
A coconut was a hard fruit that grew on the coconut palm on the planet Earth. Inside the hard shell of the fruit was a white, sweet, fleshy "meat" which was edible, and a liquid referred to as "coconut milk."
In 2268, coconut was among the ice cream flavors available on tape for reproduction in the food synthesizers aboard the USS Enterprise. Steve O'Connel was upset when Christine Chapel picked vanilla and coconut for him, as they were both white (and presumably boring). (TOS: "And the Children Shall Lead")
In 2366, Geordi La Forge offered Christy Henshaw a drink called a "Coco-no-no", made from the hollowed-out half of a coconut shell, while the two were on a date on the holodeck. (TNG: "Booby Trap")