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Marinating with lime in foil; problem?

Lemonii Sep 17, 2009 09:43 AM

I am marinating some carne asada with salt and lime. I wrapped it up in foil. Someone told me to take it out of the foil because there would be a bad reaction... anyone heard of this? Thx!

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  1. goodhealthgourmet RE: Lemonii Sep 17, 2009 10:00 AM

    yes. acid is not a good idea with foil - it'll eat through it, and can potentially also leach metals from the foil which will contaminate the food (and turn your meat black).

    1. m
      markabauman RE: Lemonii Sep 17, 2009 10:01 AM

      Generally, I've been told not to cook acidic foods in either aluminum or cast-iron cookware. Might be a similar issue of interaction with aluminum foil, especially if left for some time. I usually just marinate with lemon or lime in a plastic bag.

      2 Replies
      1. re: markabauman
        todao RE: markabauman Sep 17, 2009 04:08 PM

        Acidic foods in foil = bad idea. Acidic foods in cast iron; depends on what you're trying to protect. The acidic foods are damaging to the seasoned surface of cast iron and those types of cookware need to be re-seasoned more frequently when cooking acidic foods in them but I've never found any adverse affects to the foods cooked in cast iron and I use it almost exclusively. Tomato sauce raises heck with the seasoned surfaces so I soak the pan in hot water immediately after cooking with that and other acidic ingredients to reduce the level of re-seasoning necessary.

        1. re: todao
          ipsedixit RE: todao Sep 17, 2009 10:45 PM

          Some people (myself included) will intentionally cook acidic foods in cast iron pans to increase the iron content in my food (as I tend to be borderline anemic).

      2. greygarious RE: Lemonii Sep 17, 2009 12:23 PM

        Acidic ingredients do eat through foil, though it takes a good long while. Still, better to avoid contact with the foil. If foil is the best wrap for a particular purpose, you can always put a layer of parchment or plastic wrap between the food and the foil.

        1. r
          ricepad RE: Lemonii Sep 17, 2009 12:40 PM

          Within hours, the acidity of the lime juice will perforate the foil, and you'll have a mess.

          1. gansu girl RE: Lemonii Sep 17, 2009 03:54 PM

            Everyone else is right - and if you want to use foil over plastic wrap (which I do b/c I can recycle the foil), just put your meat & marinade in a bowl/Pyrex and then cover the top w/the foil . . . .

            http://www.semisweetonline.com

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