How to can grape jelly: time by the book
Grape jelly is high-acid, so a boiling-water bath is safe — here are the USDA processing times and how time changes with elevation.
How long do you can grape jelly?
USDA processes grape jelly for 5 minutes for half-pints and 5 minutes for pints, at a full rolling boil, jars covered by at least an inch of water.
Altitude adjustment
At altitude a boiling-water bath needs more time: add 5 minutes at 1,001–3,000 ft, 10 minutes at 3,001–6,000 ft, 15 minutes at 6,001–8,000 ft and 20 minutes above 8,000 ft.
Why grape jelly is water-bath canned
Grape jelly is high-acid (pH 4.6 or below), so a boiling-water bath reaches a safe temperature. Leave the headspace your tested recipe lists and check every lid sealed before storing.
FAQ
How long do you can grape jelly?
USDA processes grape jelly for 5 minutes for half-pints and 5 minutes for pints, at a full boil, adjusting time for altitude.
Do you water bath or pressure can grape jelly?
Grape jelly is high-acid, so a boiling-water bath is safe.
How do you adjust grape jelly for altitude?
At altitude a boiling-water bath needs more time: add 5 minutes at 1,001–3,000 ft, 10 minutes at 3,001–6,000 ft, 15 minutes at 6,001–8,000 ft and 20 minutes above 8,000 ft.
Gear this guide uses
Grape jelly is high-acid, so a boiling-water bath is enough — you just need jars fully submerged.
- A deep water-bath canner with a rack keeps jars off the bottom and fully covered by boiling water.
- A jar lifter and canning funnel make hot-pack filling safe and clean.
- Use tested-recipe Ball mason jars and lids and leave the headspace your recipe calls for.
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Sources
General education, not a recipe. Always follow a current USDA-tested process for your food, equipment, and elevation. Processing time per Part 7, Grape jelly — hot pack, sea level.