Lowtech Graph lists low-tech options for every need of a home. Here you can compare them, find tutorials to build them, and link them together into a circular system. Why low-tech?
Distinct from storage: transforms perishable food into a shelf-stable form.
Solutions
Solar dryer (dehydration): A box where the sun warms air that then flows over trays of fruit, vegetables or herbs. The warm, moving air draws out their water, so mould and bacteria cannot
Pressure canning / autoclave sterilization: A pot or chamber that heats sealed jars of food under pressure, following set times and temperatures. The pressure lets the jars get hotter than boiling water,
Boiling-water bath preserving (pasteurisation): Jars of fruit, jam, pickles, juice or acidified tomatoes heated in boiling water for a tested time, then sealed as they cool. It keeps acid foods for months at