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Thread: Are Onions that have been cut safe to use the next day or after? page

  1. #1
    davidcurry's Avatar
    davidcurry is offline Junior Member
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    Question Are Onions that have been cut safe to use the next day or after?

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    Recently, I read something that said that you should never eat an onion (after it has been cut) except for on the day that you originally cut that onion. The author stated that onions have an "absorbing" quality that causes them to suck the bad things out of the air and into themselves. (He contends that they actually become toxic) And, he stated that, although they were fine when first cut, one should never "save" them for future use after they have been cut.

    My apologies for this posting. I am somewhat embarrassed to even write it because it sounds so obviously incorrect.

    But, I would very much like to know the answer since I am eating a lot of vegetables (of course). And, I am wondering if I have to waste an entire onion every time I want a few bits of one.

    Thanks.

    David

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    vintageeats's Avatar
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    Hey David,

    I've eaten countless cut onions - out of the fridge, off the counter - and I'm still here writing to you. I think it's bunk.

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    Megatron's Avatar
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    Oh man, I'd say noooo. I know because I tried this, dicing them, putting them in a little plastic Tupperware, and leaving in the fridge overnight....and the stank they emitted the next day must have been toxic. The Tupperware would not stop smelling like it, and neither would my hands.

    So. Chop your onion fresh.

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    TCates190's Avatar
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    I save onions all the time and use them....I'm okay....I think.

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    eKatherine's Avatar
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    Quote Originally Posted by Megatron View Post
    Oh man, I'd say noooo. I know because I tried this, dicing them, putting them in a little plastic Tupperware, and leaving in the fridge overnight....and the stank they emitted the next day must have been toxic. The Tupperware would not stop smelling like it, and neither would my hands.

    So. Chop your onion fresh.
    That's coming from inside the onion. The acrid onion fumes are released from the onion when you cut it. Get too close and it will make you cry.

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    iconoclast79's Avatar
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    Why do people believe the most inane urban legends? Common sense people....

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    Megatron's Avatar
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    Quote Originally Posted by eKatherine View Post
    That's coming from inside the onion. The acrid onion fumes are released from the onion when you cut it. Get too close and it will make you cry.
    Yeah, and I can stand it while chopping, but this was something else. I eat onions nearly every day, I am used to them, this was a new, fresh hell.
    More than onion smell. It was staaank. I dunno, maybe my onion was bad, or mold got in somehow? I've chopped it in half and used the other half later without this problem, it was just dicing and storing that it got so bad. I didn't eat it but maybe it would have tasted the same...but with that smell I couldn't have done it.
    And my 'toxic' smell comment was obviously hyperbole. I doubt my stinky onion would kill anything other than a possible makeout session. Still. It was gross.

  9. #9
    jakejoh10's Avatar
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    I do it all the time. Pretty sure it's not anything to worry about.
    My nutrition/fitness/critical thinking blog:

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    Cutting the onion releases the oils. If you just cut off the portion you are using and wrap the leftover snugly in plastic wrap, it is fine to use another day. If you chop the onion to use later, you should blanch or sauté the chopped pieces, or the volatile oils released by chopping will change and become bitter. I used to know the science behind it all, but now I just know the rules. Oh, and don't peel the portion you are saving for later.

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