How to Can Jam (General Guide)
A general guide to making and canning fruit jam with pectin.
The Short Answer
Most fruit jams are water bath canned for 10 minutes. Use commercial pectin and follow the recipe exactly.
Canning Method at a Glance
Source: USDA NCHFP | Last verified: March 30, 2026
Water Bath Canning Jam (General Guide)
Half-pints and pints only.
Headspace: 0.25 inches
Step-by-Step: Canning Jam (General Guide)
- Prepare fruit per pectin recipe.
- Combine fruit and pectin. Bring to full rolling boil.
- Add sugar. Boil 1 minute.
- Skim foam. Ladle into hot jars.
- Wipe rims, apply lids. Process in boiling water bath.
There are different pectin types: regular (full sugar), low-sugar, and no-sugar-needed. Each requires different ratios. Match pectin type to sugar preference.
Safety Notes
Important: Jams are high-acid. Use tested pectin recipes. Do not reduce sugar unless using low-sugar pectin.
The Bottom Line
Jam (General Guide) can be safely canned in a boiling water bath. Always use tested recipes from the USDA, Ball, or university extension programs. Follow processing times exactly, and adjust for your altitude if you live above 1,000 feet. When in doubt about any canning procedure, consult the USDA National Center for Home Food Preservation at nchfp.uga.edu.
Frequently Asked Questions
In regular pectin recipes, sugar is essential for gelling. It also preserves color. For less sugar, use a low-sugar pectin.