The lumboy fruit is a type of tropical fruit that is native to Southeast Asia, particularly the Philippines. It is also known by other names such as "duhat" or "Java plum" in some regions. The fruit is small, usually about the size of a grape, and varies in color from green to dark purple or black when ripe. It has a thin skin and a juicy, slightly acidic pulp surrounding a large seed. Lumboy fruits are often eaten fresh, although they can also be used in various culinary applications such as making jams, jellies, and syrups. The fruit is also believed to have some health benefits, such as being high in antioxidants and having anti-inflammatory properties.