The Santol tree (Sandoricum koetjape) is fast-growing. Reaching a potential height of 140 feet, a mature tree in deep soil can produce thousands of fruit in a single season.
The fruit is slightly larger than a navel orange, and has a tough inedible rind. The fruit pulp is white and divided into large segments.
The fruit has an interesting and appealing taste, but its sourness relegates it to the status of a cooking ingredient or salad component.
The leaves turn a deep red color (yellow for some cultivars) before falling.
Care should be taken not to ingest the large seeds as they can cause serious obstruction and perforation within the body.
For more details, see: https://en.wikipedia.org/wiki/Sandoricum_koetjape