What is the name of the fruit that, when ripe, can be used as a natural substitute for sugar?

Lucuma

Lucuma, often called "the gold of the Incas," is a fruit native to the Peruvian Andes. Its unique taste, similar to caramel and sweet potato, makes it a popular natural sweetener, especially in the making of ice cream and desserts in Peru. Lucuma is rich in nutrients, including beta-carotene, iron, zinc, vitamin B3, calcium, and protein. In powder form, it has become a global superfood, used to naturally sweeten smoothies, cakes, and even coffee without adding refined sugar.