This is the next classic clickbait warning, usually alluding to a phenomenon called “hollow heart.”
If you cut open a watermelon and it has large, star-shaped cracks or cavities inside, many people initially find it creepy or “mutated.” But here’s the factual explanation:
- The “Secret” of the Cracks
It used to be common internet rumors that these cracks were caused by growth hormones or chemical sprays that made the melon explode. This is false.
The real cause: Hollow heart is usually caused by pollination problems or extreme weather changes during the growth phase (e.g., very cold nights followed by very hot days). This causes the tissue inside to grow unevenly and rupture.
The good news: A melon with cracks is perfectly safe to eat. It’s often even particularly sweet because the sugar is concentrated near the cracks.
- When you should REALLY throw it away
However, there are two warning signs that indicate you really shouldn’t eat the melon – and these have nothing to do with the cracks:
The “slime factor”: If the flesh is not only cracked but also mushy, slimy, or fibrous and smells sour. This indicates fermentation or bacteria.
Foam formation: If the melon is already “sweating” before you cut it open, or if white foam is oozing from the rind. This means that it’s already fermenting inside – often due to being stored too long in the heat. Then it really belongs in the trash.
What to look for when buying a melon (instead of clickbait)
If you want a perfect melon, look for these real signs:
The yellow spot: A large, creamy, yellow spot on the bottom indicates that it has been in the sun long enough in the field. A white spot means it was harvested too early.
The knock test: Does it sound hollow and dull? Then it’s ripe and juicy. Does it sound metallic or flat? Then it’s usually not ready yet or already dried out.
Conclusion: The star-shaped cracks are no cause for panic, but usually a sign of a particularly sweet (even if visually imperfect) melon.
Have you ever come across one of these when cutting it open, or were you just taken aback by the sensationalist headline?