I buy my salt from SF Salt in California they are on the web, I use Pacific Course Salt, I cut the onion in rings about 1/4 inch and dehydrate till dry, then I grind in a large coffee mill till I have a fine powder and mix to taste with the salt, labels and jars I get of the web, hope this helps. Right now I'm using a Mr Coffee dehydrator and it take about 12 hours per run.