Canning ham and bean soup is possible, but only in a pressure canner, and most popular “dump dry beans in a jar” recipes skip the details that actually keep the soup safe.
Ham and bean soup is a low-acid food. That means a boiling-water bath cannot heat the center of the jar hot enough to destroy Clostridium botulinum spores. A pressure canner is required.
The second catch is the ham itself. Most leftover holiday ham is cured. The National Center for Home Food Preservation (NCHFP) does not recommend adding cured ham to its general “your choice” soup method, because that method only covers ingredients that already have their own tested canning process.
You still have two safe options: follow a researched bean soup recipe that already includes a limited amount of ham, ham hock, or salt pork, or can a thin bean-and-vegetable soup base and add leftover ham when you open the jar.
Why Water-Bath Canning Is Not an Option
Beans, pork, carrots, onions, and broth sit well above pH 4.6. In a sealed jar, that environment can support botulism toxin if the food never reaches the temperature a pressure canner provides.
A pressure canner does two jobs a stockpot cannot:
- It raises the temperature above boiling water.
- It holds that temperature long enough for heat to reach the coldest spot in the jar.
An Instant Pot or other small electric pressure cooker is not a substitute unless its manufacturer published researched canning times for that exact food. USDA process times were developed in large pressure canners that hold at least four quart jars upright. Smaller cookers heat up and cool down too quickly, which shortens the total heat the food receives.
The Cured-Ham Problem Most Blog Recipes Ignore
People search “canning ham and bean soup” after Easter or Christmas, when a spiral ham is sitting in the fridge. That is the practical problem. It is also where many online recipes leave the research behind.
NCHFP’s soup guideline allows vegetable, dried bean or pea, meat, poultry, or seafood soups. It does not allow every combination. Each ingredient must already have a USDA canning recommendation. NCHFP has used cured ham as an example of an ingredient they cannot recommend in that general soup process.
Extension specialists give the same reason they do not recommend canning ham on its own: cured, brined, and smoked meats can be drier or firmer than fresh pork. Heat may move through them differently. The current USDA meat tables cover fresh pork cubes, not leftover cured ham.
That does not mean every ham-and-bean jar on the internet is automatically dangerous. It means a random recipe that layers dry navy beans, diced spiral ham, and raw vegetables into a quart jar is not a tested process. It is an adaptation.
Recipes that have been tested with ham or pork
A few published recipes do include ham, ham hock, or salt pork because those specific formulas were tested:
- Ball Blue Book split pea soup with ham
- Bernardin bean soup with a ham hock or salt pork
- So Easy to Preserve navy bean soup with a ham hock or a small cube of pork, ham, or bacon per jar
Those recipes control how much meat goes in, how the beans are hydrated, and how long the jars are processed. They are not permission to scale the ham up or skip the soak.
If leftover spiral ham is what you have, the conservative approach is still the most useful one: freeze the ham, or can a bean soup base and stir the ham in when you heat the jar.
Choose One of Two Safe Paths
Path 1: Use a tested bean soup that already includes ham
This is the path if you want ham flavor in the jar and you are willing to follow a published recipe exactly.
Typical pattern in those tested soups:
- Navy, pea, or similar dry beans, fully soaked
- A ham hock or a modest amount of salt pork or diced cooked ham
- Onion, and sometimes carrot or a small hot pepper
- Water or cooking liquid, not a thickened broth
- Hot pack into jars
- Pressure process for the time printed in that recipe, usually 75 minutes for pints and 90 minutes for quarts, with pressure adjusted for altitude
Do not treat this as a template you can freely rewrite. Adding extra ham, potatoes mashed into a puree, cabbage, flour, or dry beans that were never soaked changes density. Density changes how heat moves.
Path 2: Can a USDA-style bean soup base, then add ham at serving
This is the better path for leftover holiday ham.
NCHFP’s general soup method is not one fixed ingredient list. It is a set of rules:
- Prepare each vegetable as you would for a hot pack of that vegetable.
- Fully rehydrate dried beans before they go in the pot.
- Cook meat until tender, cool it, and remove bones. Use meats that already have USDA canning directions, such as fresh pork or poultry.
- Combine solids with broth, tomato products, or water. Boil 5 minutes. Do not thicken.
- Fill jars halfway with solids. Cover with hot liquid, leaving 1 inch of headspace.
- Pressure process as soup: 60 minutes for pints, 75 minutes for quarts (100 minutes if the soup contains seafood).
A practical pantry version looks like this:
- Soaked and boiled navy or Great Northern beans
- Hot-packed carrots and onion
- Chicken broth or pork broth made from fresh (not cured) bones
- Dried thyme, bay leaf, pepper, and a little salt
When you open a jar months later, add diced leftover ham while the soup reheats. Mash some beans against the side of the pot if you want a thicker bowl. That is how you get the meal people actually want without putting an untested cured-meat load in the jar.
Ingredients That Do Not Belong in the Jar
These are not style preferences. They change heat penetration or have no tested process in soup.
Leave out of the jar
- Flour, cornstarch, roux, or gravy packets
- Cream, milk, cheese, butter, or sour cream
- Pasta, rice, barley, or dumplings
- Pureed or mashed soup (too dense)
- Cabbage and other vegetables that lack their own USDA canning recommendation
- Extra cured ham packed in as the main protein, unless you are following a specific tested recipe that already includes it
Add when you open the jar
- Diced leftover ham
- A splash of cream
- Extra salt (canned ham and broth can already be salty)
- Fresh parsley
- A mashed-bean thickener or a small cornstarch slurry
Ohio State Extension makes the same point: a family soup can be altered to match USDA soup rules, then finished at the table.
Prepare the Beans Before They Go in the Jar
Dry beans packed raw keep absorbing liquid during processing. That thickens the soup after the lid is on. A thicker soup heats more slowly. NCHFP is direct: dried beans or peas must be fully rehydrated first.
Use either method:
Overnight soak. Cover sorted beans with water. Soak 12 to 18 hours in a cool place. Drain. Do not can in the soaking water.
Quick soak. Cover beans with water. Boil 2 minutes. Remove from heat. Soak 1 hour. Drain.
For the USDA soup method, the next step is: for each cup of dried beans, use 3 cups of water, boil 2 minutes, soak 1 hour, return to a boil, and drain. Then combine those beans with the other solids and liquid and boil 5 minutes before filling jars.
Navy beans and Great Northern beans are the usual choice. They hold their shape better than some mixed “15-bean” bags, which can split and cloud the jar. Mixed bags also include types that cook at different rates.
Do not add baking soda to the canning liquid. It can affect texture and is not part of the tested soup process.
Fill Jars Halfway With Solids
This is the step home canners skip because it looks stingy.
NCHFP requires a roughly even split of solids and liquid so heat can move through the jar the way the process time assumes. Packing beans and ham to the shoulder, then topping with a little broth, creates a dense pack the soup tables were not written for.
Work hot:
- Keep jars hot and the soup boiling.
- Use a slotted spoon to fill each jar halfway with beans, vegetables, and any allowed meat.
- Ladle hot broth over the solids.
- Leave 1 inch of headspace.
- Remove air bubbles with a plastic spatula. Recheck headspace.
- Wipe rims. Fat from ham or broth can prevent a seal; a cloth dampened with vinegar helps.
- Apply lids and rings fingertip-tight.
Headspace matters here more than in jam. Beans still swell a little. Too little headspace can force liquid out and leave a weak seal.
Pressure and Time
Use a pressure canner, not a water-bath canner. Vent steam for 10 minutes before you put the weight on or close the petcock. Start timing only after the canner reaches the correct pressure for your altitude.
If you are following the USDA general soup method (fully rehydrated beans, jars half full of solids):
| Canner | Altitude | Pints | Quarts |
|---|---|---|---|
| Weighted gauge | 0–1,000 ft | 10 lb, 60 min | 10 lb, 75 min |
| Weighted gauge | Above 1,000 ft | 15 lb, 60 min | 15 lb, 75 min |
| Dial gauge | 0–2,000 ft | 11 lb, 60 min | 11 lb, 75 min |
| Dial gauge | 2,001–4,000 ft | 12 lb, 60 min | 12 lb, 75 min |
| Dial gauge | 4,001–6,000 ft | 13 lb, 60 min | 13 lb, 75 min |
| Dial gauge | 6,001–8,000 ft | 14 lb, 60 min | 14 lb, 75 min |
Process 100 minutes if the soup contains seafood.
If you are following a tested bean soup with ham hock or salt pork from Ball, Bernardin, or So Easy to Preserve, use the time in that book. Those formulas are often processed like dried beans: 75 minutes for pints and 90 minutes for quarts, with the same altitude pressure adjustments.
Do not split the difference. Pick one tested method and stay with its time.
Let the canner return to zero pressure on its own. A quick release can siphon liquid out of the jars and leave beans sitting above the broth.
What the Finished Jars Should Look Like
After 12 to 24 hours undisturbed:
- Lids are concave and do not flex.
- Liquid covers the solids or sits just below the beans. Some siphoning happens. As long as the seal is good and the food looks normal, that jar is still usable; plan to eat siphoned jars first.
- Beans look cooked, not raw and chalky.
- Broth looks thin. That is expected.
Remove the rings. Wash the jars. Label with the contents and date. Store in a cool, dark place. Best quality is usually within a year.
Discard, do not taste, any jar with a bulging lid, spurting liquid, off odor, mold, or slimy contents.
When you open a jar of home-canned meat or bean soup, bring it to a full boil for 10 minutes before serving. Extension services recommend that extra boil for home-canned low-acid foods as a last safety check. Add 1 minute per 1,000 feet above sea level.
Why the Soup Looks Thin in the Jar
A properly canned ham-and-bean soup will not look like the stew you simmer all afternoon. That is by design.
Thickeners are left out so heat can move. Beans are rehydrated so they do not drink the broth after the lid is on. Jars are only half solids, so the finished product looks brothy.
Fix the texture in the saucepan:
- Mash a cup of beans and stir them back in.
- Simmer the opened jar uncovered for 10 to 15 minutes.
- Add diced ham and let it heat through.
- Use a small cornstarch slurry only after the jar is open.
If you want a thicker canned product, you are asking the process to do something it was not tested to do.
Mistakes That Show Up Again and Again
Putting dry beans straight into the jar. The beans swell, the liquid disappears, and the pack becomes denser than the soup process assumes.
Filling jars three-quarters full of solids. This is the most common “it looks nicer” change, and it is the one NCHFP warns against.
Water-bath canning “because the ham is already cooked.” Cooked ham is still a low-acid ingredient. Pre-cooking does not replace pressure processing.
Using soup times for a product packed like baked beans. If the jar is mostly beans with little free liquid, you are no longer canning soup.
Salting as if the ham were not there. Cured ham and ham hocks already carry salt. Under-season the jar. Adjust in the pot.
Canning in half-gallon jars. There is no tested soup process for half-gallons.
Skipping the altitude adjustment. At higher elevations, water boils at a lower temperature. The same 10-pound weight that works at sea level is not enough above 1,000 feet on a weighted-gauge canner.
How to Serve a Jar Without It Tasting Flat
Home-canned bean soup often needs a finish, not more time in the canner.
Heat the contents in a saucepan. Add leftover ham near the end so it does not dry out. A bay leaf in the jar is fine; a squeeze of vinegar or a dash of hot sauce at the table wakes up beans that sat on a shelf. Fresh onion or celery sautéed in the pan gives the aroma pressure canning flattens.
If the ham you add is very salty, use water for part of the reheating liquid instead of more broth.
Frequently Asked Questions
Can I can ham and bean soup in a water-bath canner if I add vinegar or tomatoes? No. A splash of acid does not turn this into a pickled product with a tested water-bath time. It remains a low-acid soup and needs a pressure canner.
Can I use canned beans instead of dried beans? You can make soup with canned beans to eat now. For canning, start with dried beans and rehydrate them as the process requires. Already-canned beans packed into a new soup jar give you a different density and a second full process, which usually turns them to mush.
Is ham broth safe to can? Extension answers have said there is no research-based process specifically for ham broth made from cured ham, and they recommend freezing it. Poultry or fresh pork stock has published directions. Use those if you want shelf-stable broth.
Can I add potatoes? Potatoes have their own USDA canning recommendation, so they can appear in the general soup method if they are prepared as a hot pack and the jar still stays half solids. They make the soup heavier. Do not mash them in the jar.
How much leftover ham should I freeze instead of can? USDA storage guidance for cooked leftover ham is 3 to 5 days in the refrigerator and 1 to 2 months in the freezer for best quality. Freezing is the straightforward way to save a spiral ham you will not eat this week.
Do I have to pre-cook the vegetables? For the USDA soup method, yes: prepare vegetables as you would for a hot pack of that food, then boil the combined soup 5 minutes. Raw-packing a mixed soup is not the process those time tables cover.
Canning ham and bean soup is less about finding a clever shortcut and more about deciding which risk you will not take. Pressure can the thin, researched soup. Keep leftover cured ham for the night you open the jar. The bowl on the table can still taste like the holiday ham. The jar on the shelf just should not be asked to prove a process nobody tested.