Jackfruit, a plant of the mulberry family, originated in northwest New Guinea and is now cultivated throughout the Pacific Ocean and Oceania. Evergreen trees with a height of 10-15 meters, bread trees are an excellent food crop. A bread tree bears 250-400 kilograms of fruit every year, and it is a year-round fruit. The fruit size ranges from big oranges to small watermelons, and the starch rich "white meat" evolved from perianth slices, which were artificially selected and therefore have no seeds. Breadfruit tastes like bread and sweet potatoes, and can be baked, boiled, fried, or curry. Compared to processed grains, breadfruit has a lower glycemic index and is more nutritious. Polynesians are genetically predisposed to diabetes, so breadfruit is also helpful to their health in modern society.

On the Hawaiian Islands, there were once large areas of bread trees carefully planted by indigenous people, which were a rich source of food and the cornerstone of Hawaiian social development. Hawaiian islanders believe that breadfruit is a gift from God, who once incarnated as a breadfruit tree to save hungry wives and children.