The African Star Apple (Chrysophyllum albidum) is a fruit native to West Africa and is particularly prolific in Nigeria, Republic of Benin, Togo and Ghana. It occurs seasonally in West Africa between the months of December to April, and is known by a few names; Alansa, Agbalumo, Udara, Udala etc.
Traditionally, the fruits are not harvested from the trees, but allowed to fall naturally off the tree before they are picked. The African Star Apple is usually eaten raw, as a snack. Some of the most noticeable properties of the African Star Apple are its color and its taste.
The African Star Apple tree and fruit secretes a whitish sap which gives the flesh of the fruit a chewing gum-like texture. The taste of the African Star Apple is quite complex. Depending on the stage of maturity of the fruit, it can be terribly sour or amazingly sweet. Ripe African Star Apples are savoury-sweet and tart in taste.
This complex taste lends itself well when paired in sweet dishes as a dessert or added to a cocktail. From a nutritional perspective, the African star apple is a rich source of calcium, with each serving providing up to 10% of the recommended daily allowance (RDA). The fruit also contains good amounts of vitamins A and C (higher, in fact than levels found in oranges or guava). Star apples are also quite rich in iron. Staplefood.org promotes and offers this fruit because of its nutritional properties
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https://academicjournals.org/article/article1380119640_Adepoju%20and%20Adeniji.pdf