Guides
Freeze drying guides
The background behind the calculators and food pages: what happens inside the chamber, how to store what comes out, and where the common claims hold up or don’t. New guides go up on Mondays and Thursdays.
Making Your Own Freeze-Dried Backpacking MealsWhich home meals freeze-dry and rehydrate well on the trail, how to portion and pack them, how much water each needs, and the fat and safety limits to respect.
Freeze Dryer vs Dehydrator: Which One Makes Sense for YouCost, texture, shelf life, nutrition, speed and which foods each handles best, with the break-even math on whether a $2,000+ freeze dryer is worth it over a $100 dehydrator.
How a Home Freeze Dryer Works, Step by StepWhat happens inside the chamber during freezing, primary drying and final dry, why batches take 20 to 40 hours, and how to run a sensible first batch.
How Long Does Home Freeze-Dried Food Last? The 25-Year Claim, CheckedWhere the 25-year number comes from, why Utah State Extension recommends eating home freeze-dried food within 5 to 10 years, and what actually shortens shelf life.
Mylar Bags and Oxygen Absorbers for Freeze-Dried FoodWhich bag thickness to buy, how many cc of oxygen absorber each bag size needs, how to seal properly, and the packing mistakes that ruin a batch months later.
Freeze Dryer Vacuum Pump Oil: When to Filter, When to ChangeHow often to filter and change oil in a standard or Premier pump, how to tell oil is spent, what a slow vacuum means, and what oil really costs per batch.
What Not to Freeze-Dry at Home, and WhyThe foods extension services say to skip or cook first: raw meat, raw eggs, raw milk, raw dough, oils and pure fats, and high-sugar syrups. What goes wrong with each, and the safe alternative.