Rambutan is one of the exotic fruits in Sri Lanka that everyone should try It is a fruit found exclusively in the tropics, in a few select countries only Although nowadays these are available canned in European and US markets, the taste difference between the fresh fruit and the canned product is really remarkable You can recognize these Sri Lanka fruits as crimson red hairy balls that you can cover with your hands The flesh covering the seed is the edible part it has a mild taste that is neither too sweet nor too sour Rambutan is a non climacteric fruit, which means it will only ripen on the tree.