Is this safe?
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Fermenting containers should be "food grade," meaning that they were intended to be in direct contact with food. One gallon glass or plastic jars work well for a
5-pound batch. Larger crocks or food grade plastic buckets can be used for larger batches. Sometimes older cookware contains lead in the glaze, so be sure that the container you are using does not contain lead. In addition, do not use copper, iron or galvanized-metal containers or garbage bags and trash liners.
For more information on making fermented or brined pickles please see our Pickling Vegetables publication.