A small round tropical fruit, native to Asia and related to the lychee nut, that grows in bunches ranging in size from slightly less to slightly more than one inch in diameter. It has a thin tanish brown outer skin that covers a white almost translucent meat surrounding a single dark brown stone or seed. The meat of this fruit is juicy and sweet flavored, with an appearance and taste similar to a grape. It is a fruit that is also known as "lumyai" in Thailand or "longyan" in Mandarin. They are often served fresh in salads or as snacks. They are also used to make a fruit soup, logan tea and logan wine.