We can bestow some extra points to this beloved blackish-purple fruit for fond childhood memories of purple-stained tongues and for its health. The Jamun Fruit is oblong in shape and green in color that turns into dark purple or crimson black when ripe. Black Plum or Indian Jamun Mocktail Recipe (with Pictures) Guyanese Pine Tarts - Would you like to win a free Pine Tart t-shirt? . The tree was also introduced to Florida, USA in by the USDA, and is. Jambul, Java Plum, Black Plum, and Indian blackberry are some of the names for the Jamun Dragon (Pitaya) Fruit - Nutrients, Nutritional And Health Benefits . Dinner Recipe: Pan Fried Salmon with Fresh Herbs Yogurt Sauce — Eat Well The Drink That'll Drastically Increase Your Sleep Time-tart cherry juice a day.