Question: I have cans of black olives in a can, no preservatives, olives are sterilized in the cans, cans state use olives within 7 days after opening.
was wondering if i could put olives in a barrel where brine would contain; Sodium Benzoate, Calcium Chloride, Potassium Sorbate and Sodium Metabisulfite. would addition of preservatives give me a longer shelf life?
Thank you for your time.