During sweet potato season, many are hesitant to eat sweet potatoes that have turned black in some places. But not all black spots are harmful. If a cut sweet potato slowly turns black on the surface, it is usually safe to eat. This happens when a sticky white juice called yarapin reacts to the air, changing color.
However, some sweet potatoes should be thrown away immediately. Large, round black spots on the skin and a bitter taste after cooking can mean a sweet potato contains a harmful toxin. Even a little bitterness is a warning sign, so the sweet potato should not be eaten.
J.K. Park Staff Reporter kids/1766990321/1613368218
During sweet potato season, many are hesitant to eat sweet potatoes that have turned black in some places. But not all black spots are harmful. If a cut sweet potato slowly turns black on the surface, it is usually safe to eat. This happens when a sticky white juice called yarapin reacts to the air, changing color.