Chocolate vine (Akebia quinata)

Akebia is a vigorous semi-evergreen climber grown mainly for its fragrant chocolate-scented flowers. It can produce unusual sausage-shaped purple fruit, but only if two genetically distinct plants are grown together for cross-pollination — a single plant or divisions of the same clone will not fruit. Even with cross-pollination, fruiting is unreliable in cooler climates. In warmer regions the vine can become invasive. The fruit pulp is edible with a mild, sweet flavour, and the thick rind is sometimes stuffed and fried in Japanese cuisine.