Preserving cabbage in a pressure cooker is a safe, efficient way to extend the shelf life of this versatile vegetable. Learning how to can cabbage in a pressure cooker allows you to enjoy its crisp texture and nutritional benefits long after the harvest season ends. This method, known as pressure canning, is the only safe technique for low-acid foods like cabbage. It destroys harmful bacteria and creates a secure seal for long-term storage.
This guide provides clear, step-by-step instructions. You will learn everything from selecting the right cabbage to storing your finished jars.
Following these steps ensures a safe and successful result.
how to can cabbage in a pressure cooker
This section details the complete process. Pressure canning is precise, so read all instructions before you begin. Ensure your pressure canner is in good working order and that you have all necessary equipment ready.
Essential Equipment and Ingredients
Gathering your supplies beforehand makes the process smoother. You cannot safely can cabbage using a water bath canner or an instant pot set to “canning” mode. A dedicated dial-gauge or weighted-gauge pressure canner is required.
Here is what you will need:
- A pressure canner (not a regular pressure cooker)
- Canning jars (quart or pint size), lids, and bands
- Jar lifter, canning funnel, bubble remover, and lid wand
- Large pots for blanching and heating brine
- Sharp knives and a cutting board
- Clean towels and dishcloths
- Fresh, firm heads of cabbage
- Canning or pickling salt (optional)
- Vinegar (optional, for flavor)
- Water for brine
Selecting and Preparing Your Cabbage
Start with high-quality produce. The best cabbage for canning is fresh, dense, and free of blemishes. Avoid heads with wilted outer leaves or signs of insect damage.
Early morning harvests often yield the crispiest cabbage.
Preparation is key to a good final product.
- Remove the outer leaves and rinse the head under cool water.
- Cut the cabbage into quarters and remove the hard core.
- You can shred it finely for sauerkraut-style, chop it into chunks, or slice it into wedges. Consistent size helps with even packing.
- Many recipes call for a brief blanching. This helps preserve color, texture, and removes excess air from the tissues.
To blanch, submerge cabbage pieces in boiling water for 2-3 minutes, then plunge them into ice water to stop the cooking. Drain thoroughly before packing.
Preparing Your Canning Jars and Lids
Jar cleanliness is non-negotiable for safety. Inspect each jar for chips or cracks, especially along the rim. Even a tiny flaw can prevent a seal.
Wash jars, lids, and bands in hot, soapy water. Rinse well. Keep the jars hot until you are ready to fill them. You can do this by leaving them in your canner as it preheats, or in a separate pot of simmering water. Heat the lids according to the manufacturer’s instructions, usually in a small pan of hot (not boiling) water.
The Step-by-Step Canning Process
Now, let’s walk through the canning procedure. Work in a clean, uncluttered space and avoid drafts that can cool your jars too quickly.
Step 1: Packing the Jars
Use your canning funnel to pack the prepared cabbage into hot jars. For a raw pack, simply fill the jars tightly with raw, blanched cabbage. For a hot pack, simmer the cabbage in water or a light brine for a few minutes first, then pack it hot.
Leave a 1-inch headspace at the top of the jar. This space is crucial for forming a vacuum during processing.
You can add 1/2 teaspoon of canning salt per pint jar, or 1 teaspoon per quart, if desired for flavor. Do not use iodized table salt, as it can cause cloudiness.
Step 2: Adding Liquid and Removing Air Bubbles
Pour boiling water (or a boiling brine of water and vinegar) over the cabbage, maintaining the 1-inch headspace. Run your bubble remover or a non-metallic utensil around the inside of the jar to release trapped air bubbles. This step is important for achieving a proper headspace and seal.
Add more hot liquid if needed after bubbling to re-establish the correct headspace.
Step 3: Wiping Rims and Applying Lids
Wipe the jar rims with a clean, damp cloth to remove any food particles or brine. Any residue left on the rim can prevent a seal. Place a heated lid on the jar, centered on the rim, then screw on the band until it is fingertip-tight. Do not overtighten, as air needs to escape during processing.
Step 4: Processing in the Pressure Canner
Place the filled jars on the rack inside your pressure canner, which should contain 2 to 3 inches of hot water as per its manual. Ensure jars are not touching each other or the sides of the canner. Fasten the canner lid securely, but leave the weight off or the petcock open.
Heat the canner on high until steam flows freely from the vent. Let the steam vent for 10 minutes to purge all air from the canner. Then, place the weight on the vent or close the petcock. The canner will begin to pressurize.
For cabbage, process pint jars for 45 minutes and quart jars for 55 minutes at 10 pounds of pressure. Adjust pressure for your altitude if necessary. Maintain a steady pressure for the entire processing time, adjusting the heat as needed.
Step 5: Cooling and Testing Seals
After processing, turn off the heat and let the canner depressurize naturally. Do not force-cool it. This can take 30 to 45 minutes. Once the pressure gauge reads zero, wait an additional 10 minutes, then slowly open the vent. Unlock and remove the lid, tilting it away from you.
Let the jars sit in the canner for another 5 minutes, then use the jar lifter to move them to a towel-lined, draft-free counter. Space them apart. You should hear the satisfying “ping” of lids sealing over the next 12-24 hours.
After the jars are completely cool, test each seal by pressing the center of the lid. It should not flex up and down. Any jar that did not seal must be refrigerated and used promptly. Remove the bands for storage to prevent rust and check the seal again later.
Safety Considerations for Canning Cabbage
Safety is the most important aspect of home canning. Cabbage is a low-acid vegetable with a pH above 4.6. This makes it a potential breeding ground for Clostridium botulinum, the bacterium that causes botulism, if not processed correctly.
Only a pressure canner can reach the high temperatures (240°F or above) needed to destroy these spores. Following tested processing times from reliable sources like the National Center for Home Food Preservation is essential. Do not alter recipes, processing times, or jar sizes.
Always check your equipment. Ensure your pressure canner’s gauge is tested annually for accuracy. A faulty gauge can lead to under-processing.
Storing and Using Your Canned Cabbage
Store your sealed jars in a cool, dark, dry place. A basement or pantry shelf is ideal. Properly canned cabbage should retain best quality for about 12 to 18 months. Label each jar with the contents and date.
Before use, inspect the jar. The lid should still be concave and sealed. Open the jar and check for any off-odors, spurting liquid, or unusual appearance. If in doubt, throw it out. Do not taste-test questionable food.
Canned cabbage is a fantastic pantry staple. It works well in soups, stews, and casseroles. You can use it as a quick side dish by heating it with a little butter. It’s also a great base for fried cabbage or a addition to pot roasts.
Troubleshooting Common Issues
Even experienced canners encounter problems sometimes. Here are solutions to common issues.
Jars That Did Not Seal
If a jar fails to seal, you can refrigerate the contents and use it within a few days. Alternatively, you may reprocess it within 24 hours. Empty the jar, check the rim for nicks, use a new lid, and repeat the full canning process. The quality may diminish slightly with a second processing.
Cloudy Brine or Discolored Cabbage
Cloudy brine can be caused by minerals in hard water, using iodized salt, or spoilage. If it’s accompanied by a bad smell or a broken seal, discard the jar. Natural discoloration over time is common but if the cabbage turns dark or mushy, it’s best not to consume it.
Siphoning (Liquid Loss)
Siphoning occurs when liquid escapes from the jar during processing. This can happen if jars are packed too tightly, headspace is incorrect, or if the pressure fluctuates too rapidly during cooling. While the food is often still safe if the jar sealed, the exposed cabbage at the top may discolor. You can still use it, but cut off the discolored portion first.
Frequently Asked Questions
Can you can cabbage without a pressure cooker?
No, you cannot safely can plain cabbage without a pressure canner. Water bath canning does not reach a high enough temperature to destroy botulism spores in low-acid vegetables. For long-term shelf-stable storage, a pressure canner is mandatory.
What is the difference between canning cabbage and making sauerkraut?
Sauerkraut is fermented cabbage, preserved by the lactic acid produced during fermentation. Canned cabbage is heat-processed in a pressure canner. Sauerkraut has a distinct sour taste, while canned cabbage retains a more neutral, cooked-cabbage flavor suitable for various recipes.
How long does canned cabbage last?
When processed correctly and stored in ideal conditions, canned cabbage is safe to eat indefinitely. However, for the best quality in terms of texture, color, and flavor, it is recommended to use it within 12 to 18 months. Always inspect jars before use.
Can I add other vegetables when canning cabbage?
You can create mixes, but you must process the jar for the longest time required by any single ingredient in the mix. For example, if you add carrots, you would need to follow a tested recipe for a cabbage and carrot mix to ensure safety. Do not create your own vegetable combinations without guidance from a tested source.
Why is my canned cabbage mushy?
Mushy texture often results from over-processing. Using over-mature cabbage can also contribute. For firmer texture, choose young, tight heads and be precise with blanching and processing times. Altitude adjustments are also critical; processing at too high a pressure for your altitude can lead to soft results.