Canning Whole Fruit
Canning whole fruit relies on a simple sugar syrup to preserve the structure and integrity of the produce during a water bath process. You pack clean, firm fruit into sterilized jars, cover them with hot syrup, and submerge them in boiling water long enough to force air out and create a vacuum seal that keeps the fruit shelf-stable for a year.
Firmness is your primary requirement.
Select fruit that is ripe but still holds its shape under pressure; soft or bruised fruit will disintegrate into mush during the boiling process.
- Water bath canner with rack
- Mason jars with new lids
- Jar lifter
- Wide-mouth funnel
- Large heavy-bottomed pot
What goes in.
- 5 lbPeaches, pears, or plums, pitted and halved
- 4 cupsWater
- 2 cupsGranulated sugar
Maintaining the vacuum
You must leave exactly 1/2 inch of space between the top of the fruit/syrup and the rim of the jar. Too little, and the lid may not seal; too much, and the fruit floating above the liquid will darken and lose its texture.
The method.
Prepare the syrup
Combine water and sugar in a pot over medium-high heat. Stir until the sugar dissolves and the liquid is clear, then keep it at a steady simmer.
Pack the jars
Place the fruit halves into warm, sterilized jars, cavity-side down. Pack them snugly but do not crush the fruit.
Cover with syrup
Pour the simmering syrup over the fruit, ensuring every piece is submerged. Use a thin plastic spatula to slide down the sides of the jar to release any trapped air bubbles.
Seal and process
Wipe the rims clean with a damp cloth, place the lids on, and screw the bands until fingertip-tight. Submerge the jars in the boiling water canner for 20 to 25 minutes depending on the fruit size.
Cooling
Remove the jars carefully using the lifter. Let them sit undisturbed on a towel-lined counter for 24 hours. Check that the center of the lid is depressed and does not click when pressed.
When it doesn't go to plan.
Add a tablespoon of lemon juice to each jar to keep light-colored fruits like pears from oxidizing.
If you find you have extra fruit, keep a small bowl of cold syrup nearby to snack on while you work.
Always store processed jars without the screw bands to prevent them from rusting onto the threads.
The ones that keep coming up.
Why did my fruit float to the top after processing?
This happens when there is too much air in the fruit cells or the syrup is too thick. Pack the fruit as tightly as you safely can to minimize the vertical space available for them to migrate upward.
Can I reuse the flat lids?
No. The rubber seal on the underside of the lid loses its elasticity after the first heating. Use fresh lids every time to ensure the seal holds.
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