Dragon fruit is the fruit of a species of wild cactus indigenous to South and Central America, where it is called pitaya or pitahaya.
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The fruit’s flesh is usually white or red — although there is a less common yellow pitaya too — and is studded with tiny seeds rather like the kiwifruit.
The world’s largest producer and exporter of dragon fruit is Vietnam, where the plant was brought by the French in the 19th century. The Vietnamese call it thanh long, which translates to “dragon’s eyes”, believed to be the origin of its common English name.
Dragon fruit is also cultivated in — apart from its native Latin America — Thailand, Taiwan, China, Australia, Israel, and Sri Lanka.
It was brought to India in the 1990s, and is grown in Karnataka, Kerala, Tamil Nadu, Maharashtra, Gujarat, Odisha, West Bengal, Andhra Pradesh, and Andaman and Nicobar Islands. It grows in all kinds of soil, and does not require much water.