I had a friend who was the IT/Computer netowrking chief at this toothpaste plant in COnnecicut (Sheffield's, I believe). He got a vial of pure peppermint crystals once, and put a few in a bot of boiling water, and the entire kitchen was overwhelmingly saturated with sharp tinge of peppermint. Something like hundreds or thousands of plants to make a small amount of crystals. It was awesome, though I wish I knew how to get them myself. But there has to be a way 'cause I know now that they exist.