Jackfruits fresh from the market:
Before getting the cutting started, its best to stand by a bucket of oil and apply generous amount onto the knife and hands otherwise it'll be hard to get rid of the slimy stuff (white-ish liquid at the heart of the fruit) which can even be used as glue. Once the hands or knife got stained, apply oil even during the cutting process.
You need a sharp knife to cut the fruit:
messy business to get the pockets of flesh out:
Done! Now the pieces are ready to be eaten. It's also common to cover them in flour and fry them in oil.
Even the remaining seeds can be eaten after they are steamed (similar to chestnuts which are fried though):