Obscure wine lovers, do we have a grape for you. Susmaniello grapes hail from Italy's southern Salice Salento province and are one of the world's rarest varieties used to make wine, according to Wine Searcher. Thanks to the piqued interest of discerning wine connoisseurs and the commitment of a few dedicated wine-making Italian families, these unique blends have persisted, and bottles can be found in wine cellars throughout the world.

Wine Searcher explains that Susumaniello's name itself is of interest, a derivative of the Italian "somarello" which can be translated into the word "donkey." Whether this high-yielding grape is able to carry heavy loads like a donkey or simply the fruits grow in clusters similar to the way in which donkeys stand in groups, the name has stubbornly held on.