A photo might be helpful.

dho,

Could that have been abiu?

Aloha dho,

Beesnfruit is correct. It is abiu, Poutertai caimito. Mine bears fruit through much of the year, but does not ripen during the winter months. Most of the fruits have one to three large seeds, and all of them grow readily. There are probably named varieties, but all of the plants I have seen have been seed grown. They are self pollinating, so one tree will bear. Mine grow in very moist (soggy) soil, and have numerous flowers on the branches, most of which I thin out to avoid the branches breaking under the weight of the fruits. It makes wonderful ice cream too! Your ID says that you are in Zone 10, so they should grow for you too.

Gary in Hilo, HI