Under the area of survival food I would think that adding the natives that thrive on your area would be essential.
Many of us can grow Stinging Nettle and if you look it up for it's nutrient content it's loaded!
Oasis Products have been around for decades. I suspect they are the real thing as I remember the person who developed the line in Santa Barbara California was well received at the time.
I highly doubt any "gimmick" is going on here.
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