How To Harvest and Preserve Basil For Up To 6 Months! To preserve Basil in salt, simply layer sea salt in a jar, and add basil leaves. Keep the salt jars in the freezer and use the basil within six months. You can still use the salt after your done.
"This would also be a good way to freeze chopped onions, mushrooms, peppers, and celery. I’ve frozen mushrooms on a baking sheet then transferred to a zip bag, but I’ll be saving glass peanut butter jars to use from now on.