Sweet Potatoes going black when peeled 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.