I was digging through my pantry for pasta when I discovered a forgotten bag of potatoes—covered in long, twisting sprouts that looked almost alive. My first reaction was to toss them out immediately. My second was curiosity: were they actually dangerous, or just unappetizing? Sprouted potatoes are more than just old produce. When a potato begins to sprout, it produces natural chemicals called glycoalkaloids, which act as the plant’s defense system. In small amounts they’re harmless, but when levels rise, they can cause nausea, stomach pain, or headaches. The sprouts and any green coloring on the skin are warning signs that these toxins may be building up.

That doesn’t mean every sprouted potato belongs in the trash. If the potato is still firm, with only small sprouts and no green patches, it can be salvaged by cutting off the sprouts and peeling away any green or soft areas. But if it’s shriveled, mushy, smells odd, or heavily green, it’s safer to discard it. Prevention is simple: store potatoes in a cool, dark, dry place with airflow, away from sunlight and plastic bags, and never beside onions, which speed up sprouting. And if your potatoes do sprout but remain healthy, you can even plant them—turning kitchen waste into a new harvest. Sometimes, even forgotten food gets a second life.