Jackfruits ripen pretty fast within 3–4 days. When you can smell the strong sweet aroma which is the best indicator that it is ripe.
How do you ripen a jackfruit?
Either let them sit on your counter for a few days or for a quicker method, put the jackfruit in a large plastic or paper bag with several very ripe bananas inside.
How do you cut jackfruit?
jackfruit contains a very sticky sap, so it's best to wear gloves and lightly oil any utensils that will come into contact with the fruit.