Pick a healthy looking jackfruit, from a tree or from your local store. Leave the fruit to ripe until it is ready to be cut open.
Prep your working space. Oil your hands and your knife well. This is important because the sap is very sticky.
Cut your jackfruit in half through the center. This can be the hardest part, so do that with all your energy, and work your knife through the jackfruit.
One your jackfruit has been cut into two halves, wipe off with a kitchen towel the white glue substance that is oozing out.
Continue to cut the halves into quarters. Wipe your knife frequently to get rid of excess stickiness and keep your hands oily.
Cut off the spongy fruit core from every quarter and discard the piece. Bend the quarter and this will expose all the fruit pods.
Pick out every jackfruit pod and discard any fibrous pieces. You should be left with the tender jackfruit pulp and the seed in it.
Take the seed out of the jackfruit pod and collect them in another bowl. Both the seed and tender fruit pulp are edible.
Repeat the process with the remaining fruit pulp and seeds. Cleaning 33 pounds (ca. 15 kilogram) jackfruit takes 2 hours alone and if two people share the work it's just a 60 minute job.
Eat the fruit pulp as is or store in the freezer or fridge. The seeds need to be cooked before they can be consumed. Just boil or roast the seeds.
Video
Notes
The jackfruit in the pictures and videos was about 33 pounds (ca. 15 kilogram) heavy. It's a medium-sized jackfruit.
A jackfruit is ripe and ready to be cut open when it emits a strong fruity smell. The spikes will have “opened up” or so to say they turn dark brown and look grilled. Furthermore, the fruit will get slightly soft. See all the tips in my post.
This is a medium-sized jackfruit. If you have a bigger one, you will have to cut it further into ⅛ instead of ¼, so that you can cut out the hard sticky core.