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Canning -- Pickled and Fermented Foods
Can the Italian condiment, Giardiniera, be made at home?
No. The Italian condiment, Giardiniera, CANNOT be made safely at home. This mixture of raw, hot peppers and vegetables in an oil base can support the growth of Clostridium botulinum. Therefore low-acid foods, such as vegetables, that are mixed with oil must be kept refrigerated. They can be kept refrigerated for up to 10 days.
Commercially prepared products contain specific levels of microbial inhibitors or acidifying vegetables for use in an oil-based product in the home environment. Therefore you cannot safely prepare this product at home.