Chocolate sundae

From Memory Alpha, the free Star Trek reference

A chocolate sundae is an Earth dessert made from chocolate ice cream, fudge and whipped cream.

It was one of Counselor Deanna Troi's favorite foods and she tried to instruct a replicator aboard the USS Enterprise-D to make a "real chocolate sundae" in early 2366. (TNG: "The Price") Later that year, Q ordered ten chocolate sundaes in Ten Forward when Lieutenant Commander Data observed the pleasurable impact they had on Troi. Unfortunately, Q lost his appetite before being able to enjoy the desserts. (TNG: "Deja Q").

In 2368, Troi instructed Commander William T. Riker on the proper way to eat a chocolate sundae, however, the Commander never cared for fudge. (TNG: "The Game").

Despite her character's love of chocolate, actress Marina Sirtis actually disliked milk chocolate and spit the ice cream into a bucket off camera after each bite. The 2006 Art Asylum action figure in the likeness of Deanna Troi came packaged with a small phaser, PADD, tricorder and a miniature chocolate sundae.