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When I peel sweet potatoes for a meal, why do some go black? I peel them about 1 hour or half an hour before I cook them
Potatoes of all kinds will blacken after peeling. Try putting each potato in cold water while you peel the rest. I do this with both whole and cut potatoes. You can add some acid to the water if you like, but it's not really necessary.
Starch from the potato will blacken/bruised when exposed to air.
Add a tea spoon of salt in a bowl of cold water. Immediately put the peeled potato into the water. Salted water help dissolve the starch preventing bruising.
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