Help India reduce its calories with Jamun! Jamun or Black Plum holds a special place in the mythology, where it has been made the zodiac tree of Taurus borns. So, did you know? The sweet, sometimes astringent, Jamun fruit is the sole reason behind that yummy taste we enjoy in squash, jams, candies and colored jellies. Rich in nutrients, the fruit enhances immune system and gives us a healthy heart.