As sweet potatoes get older, they can have small brown spots. If you see these, it’s a hint that you should use that sweet potato soon before it goes completely bad.
Little growths, or sprouts, might pop up from the potato. If they grow long, they could turn into roots.
If you see a white or grey-green furry spot, you can peel it off, and the inside should still be good. But, if you notice black spots, that’s a sign of fungus.
– Raw Sweet Potatoes: Pantry: They can be good for up to 5 weeks. Fridge: They’ll last even longer here, about 3 months.