Preserving Your Harvest —
Canning, Freezing & Dehydrating Basics

Freezing preserves flavor, color, and nutrition better than any other method. The key step most people skip is blanching — briefly boiling vegetables before freezing deactivates enzymes that cause texture and flavor degradation over time. Skip blanching and your frozen vegetables will be mushy and flavorless by month three.

• 1
  Wash and prep vegetables — peel, cut, or shred as needed for your intended use.
• 2
  Blanch: bring a large pot to a rolling boil. Add vegetables, return to boil, and cook 2–5 minutes depending on the vegetable (corn: 4 min; beans: 3 min; zucchini: 3 min; peppers: 2 min). Herbs don't need blanching.
• 3
  Ice bath: immediately transfer to a bowl of ice water for the same amount of time you blanched. This stops the cooking and preserves color.
• 4
  Drain and dry thoroughly. Excess moisture causes ice crystals and freezer burn.
• 5
  Flash freeze on a parchment-lined sheet pan for 1–2 hours until individually frozen. This prevents a solid clump in the bag.
• 6
  Transfer to labeled, dated freezer bags. Squeeze out air, seal, and freeze flat. Use within 8–12 months for best quality.

Water bath canning works by creating a vacuum seal in a mason jar after processing in boiling water. It's only safe for high-acid foods (pH below 4.6) — tomatoes, pickles, jams, and most fruit. The acid environment prevents botulism growth. For low-acid vegetables, you need a pressure canner.

• 1
  Use tested, current-year USDA or Ball Blue Book recipes. Do not modify ingredient ratios — especially vinegar in pickles. Acid levels are calculated precisely for safety.
• 2
  Sterilize jars: wash in hot soapy water, then heat in a 200°F oven for 10 minutes or run through a dishwasher cycle. Keep warm until use — cold jars crack in hot water.
• 3
  Prepare your recipe. Fill jars to the headspace specified in the recipe (usually 1/4 to 1/2 inch). Too much or too little headspace affects the seal.
• 4
  Wipe jar rims with a clean, damp cloth. Any residue prevents proper sealing.
• 5
  Apply new lids and rings finger-tight (not overtightened). Lower filled jars into the canner — water must cover jars by at least 1 inch.
• 6
  Process for the time specified in your recipe at a rolling boil. Adjust for altitude if above 1,000 feet (add 5 minutes per 1,000 feet).
• 7
  Remove jars and let cool undisturbed for 24 hours. Check seals — the lid center should not flex up and down. Any unsealed jars go into the refrigerator and are used within 2 weeks.

Dehydrating removes moisture to below 10%, which prevents mold and bacterial growth. You need either a food dehydrator (most consistent results) or an oven set to its lowest setting (150°F or less) with the door propped slightly open. Results are shelf-stable at room temperature in airtight containers.

• 1
  Wash and prep: slice uniformly (1/4 inch for most vegetables) so pieces dry at the same rate. Thicker pieces take longer and may not dry evenly.
• 2
  Blanch harder vegetables (carrots, green beans) before dehydrating — same process as for freezing. Soft vegetables and fruits don't need blanching. Herbs never need blanching.
• 3
  Arrange in a single layer on dehydrator trays — don't overlap. Airflow is how moisture escapes.
• 4
  Dehydrate at 125–135°F for vegetables, 95–115°F for herbs, 135°F for fruit. Times vary: herbs 1–4 hours, sliced tomatoes 6–12 hours, carrots 6–10 hours, garlic slices 6–12 hours.
• 5
  Test for dryness: vegetables should be crisp and brittle, not spongy. Any moisture means they'll mold in storage. Herbs crumble between fingers when done.
• 6
  Condition before final storage: put dried product loosely in a jar for 5–7 days, shaking daily. If condensation appears, return to dehydrator — they're not fully dry. No condensation = safe to seal and store.
• 7
  Store in airtight containers (mason jars with oxygen absorbers ideal) away from light and heat. Label with date and contents.