With regards to water purification, am not just considering grid-down scenarios – am also considering solutions for events like Flint, Michigan, where boiling water isn’t practical as you’re still going about your day to day life, though you still have access to the power grid irregardless of contaminated water. Also, yes, it’s expensive to have a system like this with the grid down, but if you’re not talking budget prepping, I don’t feel spending $2500 on a quasi-permanent water purification solution for a home is unreasonable. Again – talking wishlist/big-picture prepping ideals here, not how to maximize your bang for buck with regards to prepper gear to buy. I also don’t need a $2,600 wood burning stove in my house, especially if I’ve got a fine workable one in the garage, but that doesn’t mean I can’t dream about having one.
Freeze-dried food is nothing new. As early as the 13th century, the ancient Quechua and Aymara people of Bolivia and Peru pioneered a form of the process by exposing potatoes to the freezing temperatures of the Andes overnight, then drying them in the sun. In 1937, Nestlé used industrial technology to create the world’s first freeze-dried coffee, and in the 60s and 70s, the US military shipped freeze-dried food rations to the troops in Vietnam.
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