Why Do Sweet Potatoes Get Black Spots After Peeling

Why Do Sweet Potatoes Discolor After Peeling? Similar to an apple, if you peel a sweet potato and leave it uncovered, it will start to turn a greyish, black, or brown color. This happens because, when the flesh of the sweet potato is exposed to the air, a chemical reaction occurs and it starts to oxidize.

Is it safe to eat sweet potatoes with black spots?

These spots are called internal black spot and are essentially bruising that occurs from the potatoes lying against each other for an extended period of time. … The potatoes are still safe to eat, just cut the spots away. If there is an extensive amount of Fusarium, this can give the potatoes an off flavor.

Do sweet potatoes discolor after peeling?

If you’re just peeling them a few hours ahead, then just hold them whereever. Unlike russet potatoes, sweet potatoes (especially garnet yams) do not turn brown or lose texture on exposure to air. If you’re going to be holding them for a couple days, then drop them in cold water and refrigerate it.