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Preserving Garlic
We often receive Answer Line questions regarding food storage and garlic seems to be the one people find the most complicated. “Why can I purchase garlic already chopped or pureed in jars yet you say that I cannot do this safely at home?”
Garlic is a low acid vegetable and will support the growth and toxin production of the bacterium Clostridium botulinum when given the right conditions; conditions include:
• Improper home canning
• Improper preparation and storage of fresh herb and garlic-in-oil mixtures
• Moisture, room temperature, lack of oxygen, and low-acid conditions all favour the growth of C. botulinum
Blue garlic?
Garlic contains anthocyanins which are water-soluble pigments that may turn blue, green or purple under acidic conditions. Garlic that has changed colour and has been handled correctly is generally still safe to use.
• Choose firm, plump heads of garlic with tight cloves and dry skin
• Avoid shrivelled, sprouting, or mouldy bulbs
• Store whole heads of garlic in a cool, dry, and dark spot (not the refrigerator) in well-ventilated containers such as mesh bags for up to 1 month
• Individual cloves can be stored for 3 to 7 days
• For longer storage, try roasting and freezing the garlic or pickling it