Are they just eaten as fruit or do they make more food out of it?
Both, the interesting fact about Jackfruit is that, we eat the flesh ( by making some curry) when its raw and throw the inner fruit what you see here, when they ripen, we throw the flesh and eat the fruit , and then the seed inside the fruit is again used as food after being cooked or grilled :)
So you have food for a while...😅