Match the food to the method
Preservation works best when you start with fresh, sound produce and choose a method that fits how your household cooks. Freeze vegetables for future meals, dry herbs and peppers for seasonings, make tested refrigerator pickles or ferments, and use cool storage for crops that naturally keep well.
Eat or cook bruised produce first. Compost food that is moldy, slimy or rotten; freezing, drying, pickling and canning cannot make spoiled food safe.
Freeze vegetables with the blanch-cool-pack rhythm
- Wash, trim and cut vegetables into even pieces.
- Use the exact crop and cut-size blanching time in the National Center for Home Food Preservation freezing guide.
- Cool immediately in plenty of ice water for about the same amount of time as blanching, then drain thoroughly.
- Tray-freeze pieces for loose portions or pack meal-size amounts in freezer bags or containers at 0 F or below.
- Label the food, preparation, pack date and use-first plan before freezing.
Freeze original sauces and soups instead of canning them
Homemade sauces and soups turn a mixed harvest into future meals. Cool them quickly in shallow containers, refrigerate within two hours, portion into freezer-safe containers and leave room for liquids to expand.
Freeze pesto, blended herb sauces and original soup recipes unless they match a current tested canning recipe exactly. Thaw safely and reheat soups, sauces and leftovers to 165 F.
Preserve herbs and peppers
- Dry herbs in a dehydrator using herb-specific research-based guidance, then cool fully and pack airtight in a cool, dark place.
- Freeze chopped herbs dry, in water or broth, in small oil portions, or as a frozen herb sauce. Label the herb and liquid.
- Never store homemade garlic-in-oil mixtures at room temperature. Refrigerate only for the short period recommended by Extension guidance or freeze promptly.
- Wear gloves when handling hot peppers, work with good ventilation and dry peppers until brittle before packing or grinding.
Keep pickling and fermentation separate
Refrigerator pickles use added vinegar and continuous cold storage. Fermented vegetables rely on microorganisms working under controlled salt, temperature and time conditions. The methods are not interchangeable.
- Keep refrigerator pickles at 40 F or below and never treat them as pantry-stable.
- For sauerkraut or another vegetable ferment, follow one current NCHFP or Cooperative Extension recipe from start to finish.
- Do not invent a lower-salt ferment or change the temperature and time controls.
- Discard without tasting if food becomes slimy, develops a rotten odor or shows spoilage that the tested recipe does not identify as normal.
Give squash and roots the storage they need
- Keep mature, sound winter squash in a cool, dry, ventilated space and inspect it weekly.
- Remove tops from carrots, beets, turnips and radishes, then keep them cold and humid - usually in a home refrigerator crisper.
- Store potatoes in a dark, cool, ventilated bin away from onions.
- Separate ethylene producers such as apples, pears, ripe bananas and tomatoes from sensitive greens, broccoli, cucumbers and herbs.
- Keep a use-first basket for short-lived produce you will cook, freeze or dry within a day or two.
Treat shelf-stable canning as a tested process
Shelf-stable canning depends on acidity, density, jar size, preparation, equipment, processing time and altitude. Use a current recipe from the USDA Complete Guide to Home Canning, the National Center for Home Food Preservation or a Cooperative Extension source that cites tested methods, then follow it exactly.
- Use the specified ingredients, amounts, acid, preparation, packing style and jar size.
- Low-acid vegetables require pressure canning in a tested recipe; they cannot be made safe with an improvised boiling-water process.
- Use the complete processing time and altitude adjustment for your location.
- Do not use oven, dishwasher, microwave, open-kettle or dry-canning shortcuts.
- When a creative sauce or soup does not match a tested canning recipe, refrigerate or freeze it instead.
Label for first in, first out
Every container should identify the food, preservation method, preparation, pack date, use-first plan, tested recipe or source, and any allergen or hot-pepper note. Group freezer foods in labeled bins and plan one use-it-up meal each week before preserving more.