Chrysophyllum cainito, commonly known as the star apple, caimito, or cainito, is a tropical fruit tree in the family Sapotaceae. Native to the Greater Antilles and the West Indies, it has been widely introduced throughout the tropical regions of the world, including Central and South America and Southeast Asia. The genus name Chrysophyllum is derived from the Greek chrysos ("gold") and phyllon ("leaf"), a reference to the golden-hued, silky pubescence on the underside of the plant's leaves. The species epithet cainito is the local Antillean name for the fruit. Historically, this tree has been a staple in Caribbean and Central American home gardens, valued both as a decorative shade tree and as a source of delicious, seasonal fruit.

The tree is an attractive, evergreen species that can reach heights of 10 to 20 meters, featuring a dense, spreading crown. Its most distinctive feature is the foliage: the leaves are oblong, glossy, and dark green on the upper surface, while the undersides are covered in dense, copper-to-gold-colored silky hairs that shimmer in the breeze. It produces small, inconspicuous, greenish-yellow flowers. The fruit is typically globose or ovate, with a smooth, firm skin that ranges in color from deep purple to a light, greenish-bronze when fully ripe. When the fruit is sliced horizontally through its center, the placement of the seeds and the surrounding pulp creates a beautiful, radial "star" pattern, from which the name "star apple" is derived. Chrysophyllum cainito thrives in warm, humid, lowland tropical climates and requires deep, fertile, well-draining soil.

The star apple is celebrated in tropical gastronomy for its sweet, creamy, and jelly-like pulp. The fruit is best eaten fresh; it is traditionally cut in half and the soft, succulent flesh is scooped out with a spoon, taking care to avoid the bitter, sticky latex found just beneath the skin. The flavor is delicate and mild, often compared to a sweet, milky custard or a blend of tropical pear and honey. In some regions, the pulp is blended into refreshing milkshakes or smoothies, which are particularly popular in the Caribbean and in parts of Southeast Asia. Due to the high latex content of the skin, the fruit must be handled carefully to prevent the milky sap from adhering to the lips or fingers during consumption.

Nutritionally, the star apple is a good source of dietary fiber, Vitamin C, and essential minerals such as calcium and phosphorus. Its biochemical matrix contains various phytochemicals, including triterpenoids and phenolic compounds, which contribute to its traditional medicinal use. In folk medicine across the Caribbean and Central America, decoctions of the leaves or the bark have been used to treat various ailments, including inflammation, diabetes, and intestinal disorders, owing to the plant’s astringent properties. Modern research is beginning to explore the antioxidant potential of the fruit’s pulp and the anti-inflammatory effects of the compounds found within its leaves.