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Last night I started cooking green beans and potatoes in the crock pot, which I covered first with aluminum foil and then the lid, which didn’t fit tightly. I set the crockpot to warm overnight, but when I checked it this morning some of the potatoes were blackened. Are they still safe to eat?
With a container that full, I’m sure that some of the cut potatoes in the center were cool for quite some time and likely oxidized. But beyond the black color, I would suggest tossing them out and starting over to be safe. Sealing a lid at low temperatures can be similar to canning vegetables and could cause a food safety issue. See these links about leaving out cooked potatoes overnight:
Pre-cooking baked Idaho® potatoes
I froze my potatoes and they turned black
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Established in 1937, the Idaho Potato Commission (IPC) is a state agency that is responsible for promoting and protecting the famous "Grown in Idaho®" seal, a federally registered trademark that assures consumers they are purchasing genuine, top-quality Idaho® potatoes. Idaho's ideal growing conditions, including rich, volcanic soil, climate and irrigation differentiate Idaho® potatoes from potatoes grown in other states.
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