Interest in unusual fruits, especially tropical fruits, has been steadily rising for their supposed resemblance to cactus fruit: prickly on the outside and .. Tamarind: Also known as tamarindos or Indian dates, the tamarind fruit. Dragon fruit: A summer Thai fruit, also called pitaya or pittaya. Thai Fruit: Tamarind is tart and tangy when fresh, cloyingly sweet when dried. The tamarind is the fruit of a tall tree that grows in Asia and North Africa. Its pods are about five inches long and contain seeds and a pulp that become extre.