Soups and stews can be canned at home, but only in a pressure canner and only when the mixture stays thin enough for heat to reach the center of the jar. Vegetable, bean, meat, poultry, and seafood soups are low-acid foods. A boiling-water bath never gets hot enough to destroy Clostridium botulinum spores in those mixtures, so water-bath or steam-canner processing is not a safe option.
The USDA and National Center for Home Food Preservation (NCHFP) treat soup as a flexible method, not a free-for-all recipe. You can choose many tested ingredients. You cannot pack a jar like a finished bowl of stew, add noodles or cream, or puree the soup first. Those choices change how heat moves through the jar, and that is a safety problem, not a texture preference.
Why Pressure Canning Is Required
Low-acid foods sit above pH 4.6. In a sealed jar, that environment can allow botulism spores to grow if the food never reaches a high enough temperature for long enough. A pressure canner raises the temperature above the boiling point of water—typically to about 240°F (116°C) at the recommended pressures—so those spores can be destroyed.
That is also why commercial cream soups are not a model for home canning. Factories use equipment, controls, and process calculations that home kitchens do not have. If a soup already contains dairy, flour, pasta, or rice, freeze it. Do not try to “make it work” in jars.
What You Can Put in the Jar
The official soup procedure allows a mix of:
- Vegetables that already have USDA hot-pack canning directions
- Fully rehydrated dried beans or peas
- Cooked meat or poultry, bones removed
- Seafood, with a longer process time
- Broth, stock, water, tomato juice, or cooked tomatoes as the liquid
- Salt and dried herbs or spices
Each vegetable should be washed, trimmed, and cooked as it would be for a hot pack of that vegetable alone. If an ingredient has no separate tested canning recommendation, leave it out of the generic soup method. NCHFP specifically notes cabbage and cured meats such as ham as examples that do not belong. Extension publications also advise against pumpkin or winter-squash soup, broccoli soup, and cauliflower soup, because those mixtures pack densely and do not have researched process times.
Dried beans and peas must be fully rehydrated before they go into the pot. Unsoaked legumes keep absorbing liquid in the jar, thicken the soup, and change the solid-to-liquid ratio that the process time assumes.
Meat should be cooked until tender, cooled enough to handle, and cut into pieces—not shredded. Shredded meat packs more tightly than cubes or chunks, and that density is not part of the tested meat or soup procedures.
What Must Stay Out Until Serving
Leave these out of the jar:
- Milk, cream, half-and-half, cheese, sour cream, yogurt, and butter
- Flour, cornstarch, arrowroot, and similar thickeners
- Pasta, noodles, rice, barley, dumplings, and other grains used as starch
- Pureed soup, or a portion of soup blended to thicken the rest
Those ingredients slow heat penetration. Pasta and rice also swell, soak up broth, and can leave a dense mass in the center of the jar. Dairy can separate or curdle under pressure-canning temperatures. Add those items when you open the jar.
A practical way to think about family recipes is to can the base and finish the bowl later:
| Soup you want later | Safe to can | Add when you heat the jar |
|---|---|---|
| Chicken noodle | Broth, chicken, vegetables, seasonings | Noodles |
| Beef and rice | Broth, beef, vegetables | Rice |
| Cream of mushroom or celery | Broth, mushrooms or other tested vegetables, seasonings | Milk or cream, butter, thickener; puree if wanted |
| Cheesy potato | Broth, potato cubes, onion, seasonings | Cheese, milk, thickener |
| Split pea or bean soup | Rehydrated peas or beans, broth, allowed vegetables, optional meat | Extra thickener or a puree after opening if you want it thicker |
Soup Method vs. Tested Stew Recipes
This is the decision most search results blur.
Use the USDA/NCHFP soup method when you want a brothy mixture of approved ingredients and you will keep the jar about half solids and half liquid. Process times for that method are 60 minutes for pints and 75 minutes for quarts, or 100 minutes if the soup contains seafood.
Use a specific tested recipe when you want a heartier stew with a published ingredient list and its own process time. USDA-style beef stew is the common example: browned stew meat with potatoes, carrots, celery, onion, and seasonings, covered with boiling water, then processed 75 minutes for pints and 90 minutes for quarts. That recipe was tested as written. It is not permission to thicken the stew, add flour, pack the jar solid, or swap in untested vegetables.
Do not mix the two approaches. If you follow the flexible soup method, keep the 50/50 fill. If you follow a tested stew recipe, follow that recipe’s quantities, pack, headspace, and time.
Never can soup in half-gallon jars. Pint and quart jars are the tested sizes.
How to Prepare and Pack Soup
- Wash jars in hot soapy water. Keep them hot. Use new lids and follow the lid manufacturer’s directions.
- Prepare each ingredient as for a hot pack. Cook meat in water until tender; cool and remove bones. Cook vegetables. Rehydrate dried beans or peas: for each 1 cup dried legumes, add 3 cups water, boil 2 minutes, soak 1 hour, return to a boil, and drain.
- Combine the solids with enough broth, tomato juice, or water to cover. Boil 5 minutes. Add salt or dried spices if you want them. Do not cook the soup until it is “done.” The canner finishes the cooking.
- Use a slotted spoon to fill hot jars halfway with solids. Then add hot liquid, leaving 1 inch of headspace.
- Remove air bubbles. Recheck headspace. Wipe rims clean—white vinegar helps cut grease from meat soups—then apply lids fingertip-tight.
The half-full solids rule is the safety control for a method that allows many ingredient combinations. Heat moves faster through liquid than through a packed mass of meat and vegetables. If you fill the jar with stew solids and only a little broth on top, the published soup process time no longer applies.
Process Times and Altitude
Vent the pressure canner for 10 minutes before adding the weight or closing the petcock. Start timing only after the canner reaches the correct pressure and holds it steadily. If pressure drops below the target, bring it back up and restart the full process time.
Soups (hot pack), dial-gauge canner
| Jar size | Time | 0–2,000 ft | 2,001–4,000 ft | 4,001–6,000 ft | 6,001–8,000 ft |
|---|---|---|---|---|---|
| Pints | 60 min* | 11 lb | 12 lb | 13 lb | 14 lb |
| Quarts | 75 min* | 11 lb | 12 lb | 13 lb | 14 lb |
Soups (hot pack), weighted-gauge canner
| Jar size | Time | 0–1,000 ft | Above 1,000 ft |
|---|---|---|---|
| Pints | 60 min* | 10 lb | 15 lb |
| Quarts | 75 min* | 10 lb | 15 lb |
*If the soup contains seafood, process pints and quarts for 100 minutes at the same pressures.
After processing, let the canner return to zero pressure on its own. Wait about 10 minutes more before opening the lid. Sudden cooling is a common cause of siphoning—broth bubbling out of the jars—and of failed seals.
Meat or poultry stock alone is a different product with a shorter time: 20 minutes for pints and 25 minutes for quarts. Do not use stock times for soup that contains pieces of meat and vegetables.
Common Problems and What They Mean
Jars lose a lot of liquid. Siphoning usually comes from overfilling, packed solids, pressure that swings up and down, or opening the canner before it has fully depressurized. A sealed jar with some liquid loss can still be kept if the food stayed covered or nearly covered and the seal is sound. Refrigerate and use jars that lost most of their liquid or have food on the rim.
The soup looks thicker after cooling. Potatoes and beans release starch during processing. That is expected. It is not a reason to add flour before canning. If a jar sets up like pudding, the solids-to-liquid ratio was too high or dried legumes were not fully rehydrated. Do not store that as a shelf-stable soup; refrigerate or freeze it and treat it as a cooking leftover.
Lids do not seal. Fat on the rim is a frequent cause with meat soups. Wipe rims with vinegar. Keep rings only fingertip-tight so air can escape during processing.
A sealed jar later bulges, leaks, spurts, smells off, or looks moldy. Discard it. Do not taste it. A lid that sealed is not proof the food was processed long enough or packed safely.
You canned soup in a water bath, oven, dishwasher, or open kettle. Those methods are not safe for soups and stews. If the jars are still hot from the same day, freeze the contents. Do not leave them on a pantry shelf.
How to Serve Home-Canned Soup
Open a sealed jar, pour the contents into a saucepan, and heat it thoroughly. For extra caution with home-canned low-acid foods, many Extension programs still recommend boiling the food for 10 minutes before eating, adding 1 minute per 1,000 feet above sea level. That step does not fix an unsafe process, but it is a sensible habit if you are unsure whether every detail was followed.
Then finish the bowl:
- Simmer in noodles, rice, or barley until tender
- Whisk a slurry of cornstarch or flour into the hot soup
- Stir in milk, cream, or cheese off a hard boil so dairy is less likely to curdle
- Add fresh herbs, lemon, vinegar, or a knob of butter for flavor that long processing dulls
Store sealed jars in a cool, dark place. Best quality is usually within a year. After opening, refrigerate leftovers and use them within a few days.
When Freezing Is the Better Choice
Freeze the soup instead of canning it when you want:
- Cream-based or cheese-based soups
- Chowders finished with milk
- Pumpkin, butternut, or other pureed squash soups
- Leftovers that already contain pasta, rice, or a roux
- A thick stew you do not want to thin to a 50/50 pack
Cool the soup quickly, leave headspace in freezer containers, and use it within a few months for best texture. Potatoes can soften after freezing; pasta is better cooked fresh at serving time even in frozen soup.
FAQ
Can tomato soup go in a water-bath canner? Plain acidified tomato products have their own tested directions. A soup that also contains low-acid vegetables, meat, beans, or dairy is not the same product. Treat mixed soups as low-acid food and pressure can them, or freeze them.
Can I thicken soup with potatoes or beans instead of flour? Potatoes, beans, and okra release starch and will make a broth slightly heavier. That is acceptable inside the soup method if you still fill the jar only halfway with solids. It is not a substitute for turning the jar into a puree or gravy.
Do I need salt? No. Salt is for flavor, not safety.
Can I use an Instant Pot or electric pressure cooker? Use a pressure canner that can maintain the required pressure for the full process time and that matches current Extension guidance. Many electric multi-cookers are not designed or tested for these canning processes.
What if my favorite stew recipe is thicker than the USDA version? Can a thinner, tested base—or freeze the finished stew. Changing thickness, packing density, or untested ingredients changes the process the recipe was built on.
Home-canned soup is worth the extra rules because the payoff is a shelf-stable pot of broth, vegetables, and meat you can turn into dinner in minutes. Keep the mixture brothy, keep the solids at half the jar, use a pressure canner, and add the comforting extras—noodles, cream, cheese, rice—when the lid comes off.