Figs can be canned at home, but only as an acidified fruit in a boiling-water canner. Raw figs sit at or above pH 4.6, the cutoff between high-acid and low-acid foods, and some fruit measures above pH 5.0. That is high enough for Clostridium botulinum to be a concern if the jars are not acidified and heat-processed correctly. The National Center for Home Food Preservation states that no pressure-canning process has been developed for figs, so acid plus a boiling-water process is the only tested method.
Sugar improves color and texture. It does not make the jars safe. The acid in each jar does.
Why figs cannot be canned like peaches
Most fruits are acidic enough for a boiling-water canner on their own. Figs are not. Their pH sits on the border, and it varies by variety and ripeness, so a jar of plain figs in syrup is not a reliable high-acid food.
USDA guidance therefore requires acid in every jar before processing. The published options are bottled lemon juice or citric acid. Bottled juice is specified because its acidity is standardized. Juice from fresh lemons is not, and a weaker lemon can leave the jar above the safe pH line.
The amounts are fixed by jar size, not by how the fruit tastes:
- Pint: 1 tablespoon bottled lemon juice, or ¼ teaspoon citric acid
- Quart: 2 tablespoons bottled lemon juice, or ½ teaspoon citric acid
Add the acid to the jar before you fill it, so it is not forgotten. Citric acid changes flavor less than lemon juice. Do not reduce these amounts to suit a milder taste.
Fruit, jars, and syrup that match the process
Use firm, ripe, uncracked figs. Color at maturity depends on the variety, so judge by softness and a slight give, not by a single color. Overripe fruit with very soft flesh breaks down in the jar and heats unevenly. Cracked fruit is more likely to carry spoilage organisms into the pack.
Leave the peel on and leave a short stem attached. Peeling is not part of the tested process. Cutting off the stem lets latex bleed into the syrup, which clouds the liquid and can dull the flavor. The milky sap can also irritate skin, so wash hands after handling fruit and avoid touching your eyes.
Plan on about 16 pounds for a canner load of 7 quarts, or about 11 pounds for 9 pints — roughly 2½ pounds per quart. Do not use jars larger than quarts. The process times were not developed for half-gallons.
Light syrup, about 20 percent sugar, is the pack used in the USDA procedure. It helps the fruit hold color and shape. For a load of 9 pints, use 5¾ cups water and 1½ cups sugar. For 7 quarts, use 9 cups water and 2¼ cups sugar. Heat the water and sugar together until the sugar dissolves. Very light syrup (about 10 percent sugar) is a reasonable quality choice if you want less sweetness. The acid and the processing time still have to stay exactly as published.
How to can figs
Hot pack is the tested style. Raw pack is not.
- Wash the figs and drain them. Do not peel or stem them.
- Cover with water, boil for 2 minutes, and drain. Discard that water.
- Put the drained figs into the hot light syrup and boil gently for 5 minutes.
- Add the bottled lemon juice or citric acid to each hot jar.
- Fill the jars with hot figs and cooking syrup, leaving ½ inch of headspace. Do not pack so tightly that syrup cannot circulate.
- Remove air bubbles, wipe the rims, and apply lids fingertip-tight.
- Process in a boiling-water canner. Jars need at least 1 inch of water over the lids, and more is better for a long process. Start timing only when the water returns to a full rolling boil, and keep it boiling for the whole time.
Processing times for hot-packed figs:
| Elevation | Pints | Quarts |
|---|---|---|
| 0–1,000 ft | 45 minutes | 50 minutes |
| 1,001–3,000 ft | 50 minutes | 55 minutes |
| 3,001–6,000 ft | 55 minutes | 60 minutes |
| Above 6,000 ft | 60 minutes | 65 minutes |
When the time is up, turn off the heat, remove the canner lid, and wait 5 minutes before lifting the jars. Set them on a towel, undisturbed, for 12 to 24 hours. Then check seals, remove rings, wipe the jars, label them, and store them in a cool, dark place. Quality is best within a year. A sealed jar can remain safe longer, but texture and color decline.
Mistakes that show up in fig jars
Skipping the acid is the serious one. A sealed lid only shows that the jar formed a vacuum. It does not show that the contents reached a safe pH or that botulinum spores were controlled.
Other failures are quieter but common:
- Fresh lemon juice instead of bottled. Acidity varies too much to trust for this step.
- Overripe or cracked fruit. The pack turns mushy, and the process assumes firm fruit.
- Stems cut off before packing. Latex clouds the syrup.
- Starting the timer when the jars go into the canner, rather than when the water returns to a boil. On a full load of quarts, that can short the process by several minutes.
- No altitude adjustment. Water boils below 212°F as elevation rises, so the same clock time under-processes the jars.
- Open-kettle canning, oven canning, or “the lid sealed so it is fine.” None of those are substitutes for the boiling-water process.
- Pressure canning from a made-up time. No tested pressure process exists for figs, so inventing one does not make the product safer than the published acidified water-bath method.
If a jar does not seal, refrigerate it and use it within a few days, or reprocess it within 24 hours with a new lid for the full original time. Food left at room temperature in an unprocessed jar should be discarded.
Fig jam is a different product
Whole figs in syrup and fig jam are not interchangeable. Jam uses chopped fruit, a much higher sugar level, and added lemon juice, then a short boiling-water process — often 5 minutes at 0–1,000 feet for half-pints, 10 minutes at 1,001–6,000 feet, and 15 minutes above that, in a tested recipe such as the National Center for Home Food Preservation fig jam. Chopped figs packed like whole figs have not been tested as a separate product. If you want pieces rather than whole fruit, use a tested jam or preserves recipe instead of altering the whole-fig pack.
Unripe green figs are also a different preserve. They contain more latex and are not a substitute for firm ripe fruit in the standard canning directions.
Using the jars
Canned figs are ready to eat from the jar, drained over yogurt or cheese, or simmered briefly into a pan sauce. The syrup is mild enough to reduce on its own. Discard any jar that is unsealed, bulging, spurting, or moldy, or that smells fermented when opened.
Frequently asked questions
Can figs be pressure canned instead of acidified? No tested pressure process has been published. The approved route is bottled lemon juice or citric acid in the jar, then a boiling-water process for the time that matches your elevation.
Does the sugar make canned figs safe? No. Sugar is for color, texture, and flavor. Safety comes from the measured acid and the full processing time.
Can the stems be removed for a cleaner look? The tested preparation leaves short stems on. Removing them lets sap bleed into the syrup.
What if the only figs available are very soft? Do not can them as whole fruit. Freeze them, or use them in a tested jam if the recipe allows fully ripe fruit. Soft flesh does not match the pack the process was built for.