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vinegar (when pickling), salt . . .
Pickling adjusts the PH level of the foods being canned to make them safe. Low PH level foods have vinegar added to them in specific amounts to raise the acid level.
One method could have been pickling the food.
In 1960 people preserved food by freezing it. Food was also preserved by home canning or pickling methods and storage.
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It is a form of preserving food.
you preserve the food Ex: cooking, freezing, refrigerating, salting, spicing, irradiating, pickling, add preservatives...
By using small amount of vinegar it preserve pickle.
Just like salt, to preserve meat, vinegar does the same to cucumbers.
Foods soaked in vinegar are pickled, and soaked in salt are salt-cured. Both are means of preserving food. <><><> It is called "pickling"
pickling
it is acidic so it would significantly retard bacteria growth. Using vinegar to preserve food is called pickling. It usually involves removing water from the food by soaking it in a brine (salt water) solution and then allowing the food to soak the vinegar back into it. Many foods can be pickled such as fish (herring) and cucumbers.