Food Safety - Infused oil with dried herbs

I know using fresh herbs to infuse oil can be dangerous as the oil might become a breeding ground for botulism. I was wondering, if I first rinse my herbs (or peppers for that matter) and then dry them for several weeks/months, would it be safe to make an infused oil with these dried herbs compared to fresh ones?

Best Answer

Per the University of Ohio Extension, yes, it does reduce the risk (emphasis added):

Flavored oils also can be a concern if not prepared correctly. When herbs, garlic, or tomatoes are placed in oils, the botulism spores on the plant material can start to produce the toxin in this anaerobic mixture. To be safe, keep these flavored oils refrigerated and make only the amount of herbal oils and butters that will be used in a few days. Using dried herbs and vegetables will also reduce the risk.

Still, reduce is not eliminate. The guidelines to not can or hold the oil for long term continue to apply.

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Can you infuse oil with dried herbs?

It's easiest to work with dried herbs, since fresh ones contain water which may lead to rotting or mold. Oil. Olive and sunflower oils are good choices. Be sure to use fresh oil so that the infusion will last longer.

Can you leave herbs in infused oil?

Herbs to Infuse in OilWe also generally recommend using dried herbs. If you want to use fresh herbs, wilt them first for 12 hours to remove the moisture (too much water will cause your oil to go rancid), cut into small pieces, and crush with a mortar and pestle before adding to your infusion container.

Can dried herbs have botulism?

Safety of Infused Oils Herbs, garlic, and other vegetables used to flavor oils are low acid foods and can be a source of Clostridium botulinum spores. When these spores are surrounded by oil an oxygen free environment is created that encourages the growth of the spores at room temperature.

How long can you keep dried herbs in oil?

Infused olive oil with dry ingredients can last up to 6 months in the fridge, and depending on the flavor ingredient, it can last up to a year. That is generally possible with dried herbs.

How to make a herb infused oil with dried herbs (using the folk method)

Sources: Stack Exchange - This article follows the attribution requirements of Stack Exchange and is licensed under CC BY-SA 3.0.

Images: ROMAN ODINTSOV, Mareefe, Terrance Barksdale, Patrícia Paixao