Food · Preservation
Turning a harvest into a pantry.
Canning, drying, fermenting, curing, and sealing. Every method here extends the life of food, and every one of them follows tested sources exactly. This is the most safety-loaded cluster on the site.
Why preserve
The skill that connects every season to the next.
A garden produces food for months. Preservation makes it last for years. The tomatoes from July become canned sauce for December. The herbs from September become dried jars that flavor meals through winter. A batch of sauerkraut started in October is still improving on the shelf in February.
Without preservation, surplus becomes waste. With it, a productive garden or a good sale at the farmers' market becomes pantry depth that no grocery run can match. That is why this cluster sits at the center of the Food section: it is the bridge between growing food and having food.
But preservation also carries the sharpest safety stakes in the food domain. Improperly canned low-acid food creates a botulism risk that is odorless and potentially fatal. Incorrect curing ratios in meat can cause serious illness. Every guide here follows tested processes from the NCHFP, the USDA Complete Guide to Home Canning, or USDA FSIS. No improvised recipes, no family-method shortcuts, no Pinterest processes.
Tested processes only
Every canning process time, pressure setting, cure ratio, and temperature in these guides traces to a current primary source: the NCHFP, the USDA Complete Guide to Home Canning, Ball tested recipes, or USDA FSIS guidelines. We do not publish untested recipes, oven canning methods, inversion sealing, or open-kettle canning.
The instinct to preserve the way your grandmother did is a good one. The science of botulism is newer than many of those recipes, which is why we follow current tested processing times and headspace measurements exactly, every time.
The guides
Every preservation method, by category.
Twelve guides across three groups. The overview compares all methods side by side. Each guide covers one method from equipment through first batch, with safety gates throughout.
Start here
Compare all preservation methods
One guide that walks through every method side by side: what each preserves, what it costs, and which foods it works for.
Heat and acid methods
The core preservation skills
Methods that transform food through heat, acid, moisture removal, or microbial culture. These are the skills most households learn first.
Water-bath canning
The equipment list, the tested process, and your first three recipes: tomatoes, strawberry jam, and dill pickles. Everything you need to start safely.
Canning guide →
Pressure canning
Low-acid vegetables, dried beans, broth, and meat. How to use a pressure canner safely, dial gauge versus weighted gauge, and your first pressure-canned batch.
Pressure canning guide →
Dehydrating
Herbs, fruit leathers, jerky, and dried vegetables. Which dehydrator to buy, temperature guides by food type, and storage conditions that preserve shelf life.
Dehydrating guide →
Freeze-drying
Full meals preserved for years with texture close to fresh. What it does and does not do for food safety, which foods work best, and how to store the results.
Freeze-drying guide →
Pickling
Vinegar pickles, fresh-pack versus refrigerator, the acidity rule that keeps them safe, and where pickling fits alongside canning and fermentation.
Pickling guide →
Fermentation
Sauerkraut, kimchi, lacto-fermented pickles, and sourdough starter. No equipment required beyond a jar and salt. Your first ferment from scratch.
Fermentation guide →
Curing, sealing, and storage
Extending without heat processing
Methods that rely on salt, smoke, oxygen removal, temperature control, or sealed packaging. Some carry sharp safety gates; others are straightforward storage practices.
Smoking and curing meat
Why curing salt, not smoke, is what actually preserves. The danger-zone rule, jerky as the accessible starting point, and where cold smoking demands real care.
Smoking and curing guide →
Fish smoking
Hot smoking and cold smoking techniques for fish. Temperature control, brine formulas, and the food-safety line between the two methods.
Fish smoking guide →
Vacuum sealing
What removing air actually does, and the one claim about it that is dangerously wrong. Safe uses for dry goods, fridge, and freezer.
Vacuum sealing guide →
Root cellar basics
What "root cellar" actually means in a modern house. Temperature and humidity zones, practical setups in a basement corner or insulated garage, and which crops benefit most.
Root cellar guide →
Bulk grain storage
What to store, how much, which containers work, and the rotation method that keeps everything usable. Cost-per-calorie comparisons for the major staples.
Storage guide →
Equipment at a glance
Four tools, four jobs.
Each preservation method has its own equipment. Here is what each piece does, what it costs, and when to buy it. The technique pages linked above cover how to use each one.
Pressure canner
Required for all low-acid foods: vegetables, meats, soups. Reaches 240 degrees Fahrenheit under pressure. Must hold at least four quart jars upright. Weighted gauge is simpler; dial gauge allows precise altitude correction but needs annual testing. Electric multi-cookers with canning buttons are not recommended by NCHFP for low-acid processing.
$80 to $250
Water-bath canner
For high-acid foods only: fruits, jams, pickles, acidified tomatoes. A large pot with a jar rack and fitted lid. Must be deep enough for 1 inch of boiling water above the jar tops. A stockpot you already own plus a $10 rack works identically.
$25 to $60 (or a stockpot plus a rack)
Dehydrator
Removes moisture from fruits, vegetables, herbs, and meats. Stackable round units are compact and affordable ($40 to $80, 4 to 6 trays) but dry unevenly. Box-style units with rear-mounted fans dry uniformly across 6 to 12 slide-out trays ($100 to $300). An adjustable thermostat (95 to 160 degrees) is essential, not optional.
$40 to $300
Vacuum sealer
Removes air and heat-seals bags to prevent freezer burn and extend shelf life. External clamp sealers ($30 to $80) handle most household needs but struggle with liquids. Chamber sealers ($200 to $500) handle liquids and use cheaper smooth bags. Bag cost runs $0.05 to $0.30 each depending on type.
$30 to $500
Keep the equipment working
Preservation equipment works under pressure and at temperatures that destroy pathogens. Maintenance is not optional.
Pressure canner: Wash and dry all parts after each use. Do not submerge dial gauge lids. Before each season, inspect the gasket for cracks, check the vent port for blockages, and have dial gauges tested at your county Cooperative Extension office. Replace gauges off by more than 2 PSI.
Dehydrator: Wash trays after each use. Wipe the interior. Check that the fan runs freely and the thermostat responds across its range. Clean air intake vents to prevent dust buildup.
Vacuum sealer: Keep the sealing strip and drip tray clean. Wipe the gasket after each session. Replace the gasket or sealing strip when seal quality degrades. Store with the lid unlatched.
Where preservation connects
Everything upstream feeds into preservation. Garden tomatoes become canned sauce. Foraged berries become jam. A fishing trip becomes smoked fillets. Goat milk becomes aged cheese. Preservation is the step that turns a seasonal harvest into a year-round resource.
Everything downstream depends on it. The working pantry is built from preserved food. The cooking cluster teaches how to turn it into meals. The traditional food crafts cluster extends the same methods into cheese, sausage, vinegar, and butter. Preservation is the hub that all other food skills connect through.
Your next step
Two starting points. Pick the one that fits.
No gear yet
Fermentation requires a jar and salt. No canner, no dehydrator, no special equipment. Sauerkraut is the classic first project and it teaches the underlying science of preservation.
Fermentation guideReady to can
If you have a garden producing more than you can eat fresh, pressure canning is the skill that turns the surplus into jars that last years. One canner opens everything in the low-acid world.
Pressure canning guide