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Water-Bath vs. Pressure Canning: Choose the Safe Method
Learn why food acidity determines whether to use a boiling-water canner or pressure canner, with links to current tested guidance.
Read the guide →Canning science · Seasonal kitchens · Thoughtful pantries
Preserve the harvest.
Keep the method tested.
Clear home-canning guides grounded in USDA, CDC, and Extension guidance—written for cooks who care where their food comes from and how it reaches the shelf.
Fall fruit
Canning Pears Safely: Why Asian Pears Need Added Acid
Identify the pear first, then follow the tested hot-pack, jar-acidification, headspace, and altitude instructions for that fruit.
Fall fruit
Canning Apple Butter Safely: Stay Inside the Tested Formula
Follow the standard NCHFP formula from apples and acid through doneness, hot fill, quarter-inch headspace, sterile jars, and altitude-adjusted processing.
Canning science
How to Find a Tested Canning Recipe—and Know What Not to Change
A practical guide to finding research-tested home-canning recipes and recognizing substitutions that can make a process unsafe.
Canning science
Canning at Altitude: Why Time or Pressure Must Change
Understand why elevation changes boiling-water and pressure-canning instructions and how to use the adjustment in a tested recipe.
The pantry
After the Canner: Check Seals and Store Jars Safely
Learn how to cool, check, label, and store home-canned jars, plus the warning signs that mean a jar should not be tasted.
Seasonal safety
Canning Pumpkin and Winter Squash: Cubes, Not Purée
See why tested pressure-canning directions cover one-inch cubes while purée, pie filling, and pumpkin butter belong in the refrigerator or freezer.
Fall fruit
Canning Applesauce Safely: Sugar, Texture, Jars and Altitude
See which choices the tested method allows, why hot pack and measured headspace matter, and how jar size and elevation change the process.