What tropical fruit has a wrinkled purple- brown exterior with a yellowish interior and edible seeds?

The tropical fruit you’re describing is the dragon fruit, also known as pitaya. Its wrinkled, purple-brown exterior often resembles a scaly texture, while the interior is typically white or yellow with tiny, edible black seeds. This fruit is not only visually striking but also offers a mildly sweet flavor and is rich in nutrients. Dragon fruit is commonly used in smoothies, salads, and desserts.