If the garlic in canned d... - Ask Extension
If the garlic in canned dill pickles turns blue what does this mean? And are the pickles safe? Jars are properly sealed.
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If the garlic in canned d... #349729
Asked August 03, 2016, 4:33 PM EDT
If the garlic in canned dill pickles turns blue what does this mean? And are the pickles safe? Jars are properly sealed.
Hancock County Ohio
Expert Response
Garlic is known to contain sulfur compounds which can react with minute traces of copper to form copper sulfate, a blue or blue-green compound. The amount of copper needed for this reaction is very small and is frequently found in normal water supplies. Raw garlic contains an enzyme that if not inactivated by heating reacts with sulfur (in the garlic) and copper (from water or utensils) to form blue copper sulfate. The garlic is still safe to eat and so are your pickles
