According to the FDA, manufacturers of acidified foods can claim a shelf life of two years - mostly because that's as far as the studies go, as Jim points out. But be careful about claiming a shelf life of more than two years - verbally, in advertising, etc. You're in violation of some Federal standard (don't think it's in the Code of Food Records (CFR), but it might be) if you do. -- Robert Farr (540) 668-7160 Check out http://www.thechileman.com for Hot Sauces, Salsas, Mustards & More!