Green patches on potatoes indicate light exposure, which triggers chlorophyll production and signals the potential presence of a natural toxin called solanine.

Solanine acts as a defense mechanism for the plant, but consuming it in high amounts can lead to bitter flavors and digestive distress.

Symptoms of solanine poisoning include nausea, vomiting, stomach cramps, and diarrhea, with children being particularly vulnerable due to their smaller body size.

You do not need to throw away every potato with a small green patch; minor, shallow discoloration can simply be cut away generously.

Along with green patches, any sprouts should also be completely removed before cooking the remaining normal-tasting flesh.

However, if a potato is extensively green, deeply discolored, heavily sprouted, or tastes bitter, it should be discarded entirely.

Cooking methods like boiling, baking, or frying do not destroy solanine, making physical inspection and trimming essential before cooking.

To prevent greening, store potatoes in a cool, dark, and dry place, as darkness stops the light exposure that triggers chlorophyll.

Avoid keeping potatoes in transparent packaging under bright light, and inspect them both before and after peeling to spot hidden greening.

Ultimately, paying attention to these simple warning signs protects your family from illness while helping you minimize unnecessary food waste.