Ripeness was a condition of fruit or vegetables whereby they became the most flavorful and edible.
In 2373, Harry Kim recalled having eaten over half a kilo of the overripe fruit he had encountered on an away mission as being a memorable moment with Captain Kathryn Janeway. (VOY: "Coda")
In 2374, Odo described the Livanian beets Quark had inherited from an apparently deceased Morn as being "very ripe". (DS9: "Who Mourns for Morn?")
In 2378, Irene Hansen recalled young Annika Hansen, her niece, as having pointed out all the imperfectly ripe strawberries in her strawberry tart, which Seven apologized for having done. (VOY: "Author, Author")