1. Use your thumb and index finger to pinch the two adjacent thorns of the durian skin. If it can be pinched, it means it is ripe.
2. Observe whether there are obvious lines or cracks on the bottom of the durian. If it cracks, it means it is ripe. The bigger the crack, the more mature the durian is.
3. Shake the durian. If you feel the pulp shaking, it means the durian is ripe.
4. Smell it and see if the durian fragrance is strong. The stronger the fragrance, the more mature the durian is.
5. Use a knife to make a small opening at the bottom of the durian, and observe the softness and hardness of the pulp and the color of the pulp. If it is ripe, it can be eaten. If it is not ripe, cover the shell to continue ripening.
6. In addition, the skin of Golden Pillow durian will turn yellow and open when it matures, but most of the skin of Tomani durian will not turn golden and rarely crack when it matures.