2

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Black spots on nuked sweet potatoes

Answered on August 19, 2014
Created December 09, 2011 at 9:39 PM

I've been eating sweet potatoes for years but have a relatively new problem with them. I usually peel them, cut them into large chunks and pop them in the microwave for 4-7 minutes depending on the size. I stick them in the fridge, bring them to the gym and eat them after a workout with some protein. Lately, though, after I nuke them, they have multiple black spots on the sides of the chunks where the skin was. It doesn't matter if I let them cool down in the microwave before sticking them in a bag, if I let them cool out on the counter, if I stick them in the fridge on the same plate I nuked them in, or if I just stick them directly into a plastic bag when they're still hot/warm (not a good idea, I know).

This used to never happen. What's going on? Are they still edible? Sometimes the spots look like they're just on the surface, some look like they're sinking into the flesh. It looks kind of gross and makes me not want to eat them, but I love them!

E3575e92da86cbf4d7803d3aa09f962a

(35)

on December 12, 2011
at 10:48 PM

Great. Thanks for your help!

1d0497f8781845ab371b479455bfee8e

(11157)

on December 10, 2011
at 12:44 AM

Radiation sickness? :-P

E3575e92da86cbf4d7803d3aa09f962a

(35)

on December 09, 2011
at 10:09 PM

That's what I do, too, but I'm getting tired of eating around them. It feels like wasting food. Plus, I never had to worry about any spots before! It's so weird.

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3 Answers

1
3bad4b0b105bf44d7650e7fdfbe15cbd

on December 10, 2011
at 07:44 AM

Likely just oxidation from the air - nothing to worry about. You can test this by placing them into water before any brown spots form - as long as they're in the water, no spots should form.

I'm assuming from the way you phrased things that the spots aren't apparent until well after removal from the microwave, in which case caramelization would be ruled out.

E3575e92da86cbf4d7803d3aa09f962a

(35)

on December 12, 2011
at 10:48 PM

Great. Thanks for your help!

0
5e36f73c3f95eb4ea13a009f4936449f

(8280)

on December 09, 2011
at 10:16 PM

Carmelized sugar?

I usually cook mine in the oven, not the microwave. I don't see the spots you are mentioning, but do see brown sugar/juice carmelized on outside the sweet potato sometimes.

0
C4ed6ba382aed2eefc18e7877999a5de

(1579)

on December 09, 2011
at 10:02 PM

I've had this happen before. If they're big, I'll cut them out and I just leave them if they're small. I don't worry too much about it but I'm not really sure why it happens.

E3575e92da86cbf4d7803d3aa09f962a

(35)

on December 09, 2011
at 10:09 PM

That's what I do, too, but I'm getting tired of eating around them. It feels like wasting food. Plus, I never had to worry about any spots before! It's so weird.

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