lol...this may be a little off subject mel, but for your sauces...if you want to have a good shelf life, you have to watch your ph...you probably want it down around 3.8 or so...if you don't have a ph tester, they are relatively inexpensive and you should get one...I have puree that I put up 2 years ago with the ph of 3.8 and have been pressure canned and it is fresh as the day I put it up...
hot packing coozies is another thing though...you can't get them hot enough to kill the botulism from what I have read so you really need to pay attention to your ph...