Here is a relative(Ebenales, Sapotaceae) of that tree, Manilkara Zapota(Sapota), called "Chico" in the Philippines and Mexico, Nispero in Puerto Rico. Native to Mexico to Central America. The sap or latex of this tree, called chicle, is the source of Chiclettes chewing gum. I had four grafted plants of this, but last year's cold winter killed them.
Flower:
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Fruit:
Fruit in Cluster, showing Leaves:
The fruit tastes like brown sugar! Fruit structure is somewhat different than the Auosubo Machuelo and closer to the Mamey Sapote in shape, but not in size. The Machuelo looks more like the Canistel (Chesa in the Philippines).
They are commonly called "Sapodilla", elsewhere, and may be found in some Asian stores.