Salt turned blue on lime.

I'm making an arab salad,Tabuleh.It's a bulgar wheat salad with tomatoes,onions,green bell pepper,black pepper and olive oil.Looooooots of lime juice and salt.I make it since I was a little girl,but today something went wrong...or not...maybe I just never noticed it before but the salt turned blue in touch with the lime juice.Is this reaction normal?Is it safe to serve the salad like this?

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ChefOno
ChefOno June 7, 2012

The color blue could indicate the presence of copper or iodine.

Were you using a copper bowl by any chance? Copper = bad.

Iodine is present in most table salt (check the container). Certain combinations of chemicals can react with iodine ions creating the color.

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