My hairdresser, who is from Turkey, told me that when she cans homemade things like a recent batch of tomato sauce, she fills the jars, then lights a kitchen match, the wood kind, and throws the lit match in the jar and quickly seals it. When the match uses up all the air, the lid is drawn down, creating a vacuum seal. She showed me a jar she had done like this, and sure enough, pushing on the center of the lid, it was not springy at all. Has anyone sealed jars like this instead of processing in boiling water? Is this a safe method of sealing jars? It seems much easier than a water bath. She says she just takes the match out when she opens the jars. And she says the jars stay fine for a few years! I am afraid and don't want to get sick so if anyone out there has also used this method, please let me know. Thank you.