For pickling, the recommended vinegar to use is one with 5% acidity. This is also known as 50 grain vinegar. While most vinegars are at 5% acidity, some are not. Therefore, show wisely and read the label.
Typical distilled white vinegar and apple cider vinegar has 5% acidity, but it depends on the brand. There are some alternative vinegars, such as a “pickling vinegar base” which is only 2.5% acidity. There are no pickle recipes developed for this type of vinegar for canning, but it could be used in a refrigerator pickle. Do not use “cleaning” vinegars as they are too high in acidity.
Learn more about different vinegars from Penn State Extension.
