1. Look at the color. The color of ripe jackfruit is darker, while the color of unripe jackfruit is green.
2. Smell: Ripe jackfruit has a strong aroma, while unripe jackfruit has a lighter flavor.
3. Look at the softness: Ripe jackfruit is soft when pressed, while unripe jackfruit is harder when pressed.
4. Listen to the sound: The sound of ripe jackfruit is muddy, while the sound of unripe jackfruit is crisp.