here's something to try. put in plastic bag. suck out air by inhaling
through straw. shoot in some propane. I bought a tank and nozzle for $10
earlier this year, not for preserving in the abscence of air, but for
plumbing renovations. I think I'd let it air out a few minutes before
putting the oven to reheat. I've never heard of preserving food this way
so you'd be breaking new ground.

"RC" ) writes:
> I have a baked product which is composed of dried fruits with added oil,
> wine, and water. This is all encased in a pastry wrap. Moisture content is
> over 15% by a bit. Without refrigeration, not surprisingly when packaged in
> plastic, we get mold.
>
> Is there a specific type or family of preservatives that we could consider?
>
> I'd like to keep this product as "Natural" as possible but do value
> un-refrigerated shelf life.
>
> Can anyone help?
>
> Thanks!
>
>


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