Innovative gourmands have found lots of clever ways to dehydrate food: posh dehydrators, oven warming drawers and carefully arranged electric space heaters. Most of these, however, require power and patience in equal measure. If you're looking for a more rustic method, take a page from pioneer history and dehydrate your food mostly gadget-free.
"Without Heat" Is a Misnomer
While you can certainly dehydrate food without plugging in to power or turning on the gas, some form of gentle heat is a necessary element in the process. After all, the basic principle of dehydration involves heat: essentially, it's the movement of warm air around the subject of the drying, whereby the warm air rises and brings moisture with it.
The gentle heat required for dehydration -- around 100 degrees Fahrenheit, according to the University of Illinois at Urbana-Champaign College of Agriculture -- varies according to the thickness and native moisture content of the food. For example, drying paper-thin strips of meat into jerky will require less warmth and less time than drying big grapes into raisins. The idea is to find a level of heat that dries the food without cooking it; when the outside of the food dries too quickly, the dry "shell" traps moisture inside the food.
The drying food must have steady, gentle air flow around it in order to move the moisture away. Sometimes, this requires a fan set to low; however, strong airflow is likely to either blow the food away or blow dust onto the food, so don't overdo it.
Solar drying is the simplest non-gadget-requisite method of dehydration. Best suited for arid climates, solar drying involves slicing the food into the thinnest possible pieces, arranging them in a single layer on screens or thinly stretched cloth, then placing the screens in full sun. The food must be covered at night to protect it from gathering dew and watched during the day to scare off snacking wildlife.
To dry food in a warm indoor environment, you can use the same methods as Native Americans and medieval housewives did. Herbs, leafy greens and flowers can be bunched, covered lightly with cheesecloth or mesh, and hung from the ceiling. Alternatively, stretch bedsheets tightly between mooring points to dry greens and paper-thin slices of fruit and vegetables. Another method is to "sew" slices on a long thread, making sure to leave space between each piece for the air to move through.
Meat and Fish Safety
Unless you're in Arizona and it's the middle of July, you will need something hotter than a room-temperature environment to safely dry meats and fish: otherwise, insects will lay eggs in the food. If you're unwilling or unable to dehydrate using power, dry these foods close to fire and pre-salt the pieces. When the meat or fish becomes brittle, it's ready to store.
How to Dry Radishes
How to Dehydrate Ground Beef
Dehydrated Fruits & Vegetables ...
How to Reheat Chinese Takeaway
How to Store Cashmere From Moths
Fruits & Vegetables: Carbon Dioxide ...
Care Instructions for Voile Fabric
How to Dry Pumpkins
How to Store Dehydrated Foods
How Does Cotton Help Insulate?
How to Stretch Wool After Shrinking It
How to Dehydrate Food With an Oven for ...
How to Cook With a Gas Fireplace
African Food Facts
How to Do a Blow-Dry Wrap
How to Dry Cilantro at Home
How to Make Dried Meat
How to Dry Papaya Leaf for Tea
How to Dry Jujube Fruit
How to Take Wrinkles Out of Polyester ...
- University of Illinois at Urbana-Champaign College of Agriculture: Drying Food
- The Complete Guide to Drying Foods at Home; Terri Paajanen
Annette O'Neil is an air sports athlete, digital nomad, full-time traveler and yogini. A writer for more than a decade, O'Neil has written copy, content and editorial articles for hundreds of clients and publications, including Blue Skies Magazine and Whole Life Times.