What kind of shelf life are looking at? I was wonding if could do this for the medium term. Are you you using the gamma seal lids or just the regular lids? Where are you getting the liquid nitrogen and how do you use it? Please describe. Is is better than the oxygen absorbers?Used food pails, restaurants, delis, school cafeterias, etc. I don't do the mylar bags, just flood with N2, and seal.