Well, the purpose of it is to kill off everything including botulism spores so it will keep for a long time, but yeah you're raising the internal temp to 240°+ and letting it sit there for an hour and a half, so it does cook it some.Didn't realize you actually cook with the glass and contents inside a pressure cooker. Neat idea.
Oh nice... You know the name of it? Sounds like my kind of storeIt's the only hardware store with a ffl/army surplus I know of.