Fruit people have interesting traditions involving their own “flavor”. Each is born as a different fruit, and though you’ll rarely see fruit people eating non-sentient fruit, it’s considered customary for a young fruit to drink their own fruit flavour when they come of age. Sort of like a weird first communion bar mitzvah. A similar tradition is also held at weddings, where the newlyweds drink each other’s flavours. Drinking your own or someone else’s flavour of wine is a very romantic and important part of fruit tradition.
At least it is in the eyes of a teenage girl. Most people just use it as an excuse to get wasted.