Kitchen Science, Honestly

Garlic Turned Green or Blue in Achaar (Lehsun): Is It Safe? (Video)

2:27 min

Read the full written guide: Garlic Turned Green or Blue in Achaar (Lehsun): Is It Safe? →

Ever wonder why your garlic achaar turns turquoise? We explain the chemistry behind the color and why it’s not a sign of spoilage. Learn simple tricks to keep pickles white, spot real spoilage, and the crucial rule for garlic in oil to avoid botulism. This is kitchen science, not medical advice.

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Transcript

Green garlic in pickles? It’s safe, and here’s why.

Green garlic in pickles? It’s safe, and here’s why.

Green Garlic in Achaar

We’ll show why the blue tint in your garlic pickles isn’t a warning sign and reveal the single trick that keeps every batch safe and tasty.

Why colour forms

When you crush or soak garlic in vinegar, lemon juice, or any acidic liquid, the enzyme alliinase meets sulphur compounds and amino acids inside the cloves, producing a blue-green pigment that looks vivid but is completely harmless.

Blanch time

A quick minute of blanching in boiling water deactivates the enzyme, so the cloves stay bright white and won’t develop the green hue even after they sit in acid.

What boosts colour

Cold-stored garlic builds up more of the sulphur precursor that fuels the pigment, strong acid like vinegar or lemon accelerates the reaction, and even a trace of copper from old brass or copper pots can deepen the turquoise shade.

How to keep white

To keep your pickles white, start by blanching peeled cloves for exactly one minute, then transfer them to ice water and let them dry completely on a clean cloth for an hour or two. After they’re dry, mix them with plenty of vinegar, a pinch of salt, a drizzle of oil, and store the jar in the refrigerator.

Oil safety window

When garlic is stored in oil, the rule is simple: keep it refrigerated and use it within four days, or freeze the jar for longer keeping; otherwise the low-acid, air-free environment can allow dangerous bacteria to grow.

Safe vs spoiled

Green, blue, or turquoise cloves are just the natural pigment and perfectly fine to eat, while a fuzzy white film may be harmless yeast. If you see any coloured mould, a bulging or hissing lid, fizzing bubbles, or slime, discard the whole jar without tasting.

The one rule

The one rule to keep your garlic pickles safe from hidden botulism is never leave garlic-infused oil at room temperature. Refrigerate the jar right after making it, and consume or freeze it within four days.

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Read the full guide

The full guide is on thecareonline.com. General information only, so check with your doctor for your own case.

Nothing on The Care Online is medical advice. Traditional practices are described as tradition, not as fact. Take a persistent or serious concern to a qualified professional. See how videos and posts are made on our methodology page.