The milky substance you referred to is normal. It is the sap. Many times when baking whole sweet potatoes this sap will ooze out and look like .
Are sweet potatoes supposed to be hollow inside?
When it comes to pithy sweet potatoes, as long as the inside of the potato has only a few holes here and there, it should be perfectly safe to eat. If the holes are all over the place, throw it away to be safe. That sweet potato probably isn't spoiled, but it will taste bad, so there's no point in cooking it.
What do holes inside sweet potato mean?
“Low temperatures cause the potatoes to develop too tough a center, while high temperatures will cause the roots to sprout, shrivel and become pithy.” Francis said sweet potatoes stored in cool, constant conditions have a shelf life of up to several months.
Should a sweet potato have holes?
You can still eat your sweet potatoes if they have a few small black holes. Black holes can be caused by bruising, oxidation, or chemical reactions from cooking. Sweet potatoes with deep black pits, however, are signs of rot, so you should discard them.
Is it OK to eat potatoes with holes?
Eat or toss: As long as the holes are dry, you should be able to treat this like a regular potato. These worms don't take up residence in the potato. They aren't associated with disease transmission to humans.
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