To can sauerkraut, hot-pack in jars with ½-inch headspace and process in a boiling-water canner: pints 10 min, quarts 15 min; adjust for altitude.
Sauerkraut can be canned safely at home when you start with a fully fermented batch, keep clean gear, and follow tested steps. This guide walks you through the hot-pack method that home canners trust, with clear timing, tight headspace, and altitude adjustments drawn from research-based sources.
How Do You Can Homemade Sauerkraut?
If you came here asking, “how do you can homemade sauerkraut?”, here’s the short path: heat the kraut and brine, pack into hot jars with ½-inch headspace, remove bubbles, wipe rims, apply lids, and run a boiling-water canner for the correct time. The details below fill in each step so you can jar a crisp, bright batch that stores well.
Canning Homemade Sauerkraut Steps, Tools, And Safety
Great jars start with great mise en place. Lay out your canner, jars, lids, and basic tools, then prep a clean workspace. You’ll hot-pack the kraut, which keeps texture lively and shortens time in the canner. The checklist below keeps you from hunting for a missing jar lifter at the worst moment.
| Item | What It Does | Notes |
|---|---|---|
| Boiling-Water Canner | Holds jars fully under boiling water | Rack prevents breakage and promotes circulation |
| Canning Jars (Pint/Quart) | Heat-tough glass for shelf storage | Inspect for chips and hairline cracks |
| Two-Piece Lids | Flat lid + ring create a vacuum seal | Use new flats; rings can be reused if rust-free |
| Jar Lifter | Moves hot jars safely | Grippy tongs save hands and seals |
| Wide-Mouth Funnel | Keeps rims clean during filling | Reduces cleanup and seal failures |
| Bubble Remover | Releases trapped air | A plastic spatula or chopstick works |
| Ladle & Heat-Safe Pot | Warms kraut and brine evenly | Stir often to prevent scorching |
| Clean Towels | Dry jars and stage cooling | Set jars on a folded towel, not bare stone |
| Vinegar & Paper Towels | Degrease rims | Wipe rims before lids for a tight seal |
Before You Start: Fermentation And Salt
Fully fermented kraut is the base for safe canning. Use a recipe that keeps the cabbage under brine and uses plain canning salt. A widely cited method is 3 tablespoons canning salt per 5 pounds shredded cabbage, packed and weighted until tangy and translucent. Keep everything under brine the whole time.
For fermentation details and safety cues, the National Center for Home Food Preservation sauerkraut page lays out cabbage-to-salt ratios, temps, and troubleshooting based on USDA-tested procedures.
Prep The Canner And Jars
Wash jars, lids, and rings in hot soapy water and rinse well. Simmer the flats if your brand calls for it. Fill the canner halfway and start it heating. Keep jars hot in the canner or in a warm oven so they don’t crack when filled with hot kraut.
Hot-Pack Method: Step-By-Step
1) Heat The Kraut And Brine
Transfer fermented kraut and enough brine to a large pot. Bring just to a boil, then hold at a gentle simmer. Stir so the heat is even. You don’t want scorching, and you don’t want it to dry out. If the brine runs short, you may top up with a light brine (½ teaspoon canning salt dissolved per cup of boiling water) just to keep cabbage covered in the jar.
2) Fill Jars With Tight Headspace
Place a hot jar on a towel. Using the funnel, pack hot kraut and brine, leaving ½-inch headspace. Work out bubbles with a utensil, then re-check headspace. A tight ½-inch is the sweet spot here.
3) Clean Rims And Apply Lids
Dip a paper towel in vinegar and wipe the rim until spotless. Place the flat lid, then screw the ring fingertip tight. Over-tightening can squeeze out brine and hurt the seal.
4) Process In A Boiling-Water Canner
Lower jars so they sit on the rack with at least 1 inch of water above the lids. Bring the canner back to a strong boil and start timing. For hot-pack sauerkraut, process pints for 10 minutes and quarts for 15 minutes at 0–1,000 feet. Adjust for higher elevations using the table below. These times mirror the USDA process published via NCHFP.
5) Cool, Check Seals, And Store
When time is up, turn off the heat. Let jars rest in the canner for 5 minutes, then move them to a towel. Leave space between jars. After 12–24 hours, remove rings, check seals, and wash the jars. Label and store in a cool, dark spot.
Processing Time By Altitude (Hot Pack)
Altitude changes the boil point, so canning times change with it. The figures below are drawn from the USDA Complete Guide, published on the NCHFP site. If you need a deeper dive on the science of altitude corrections, your county extension office can help.
| Altitude | Pints | Quarts |
|---|---|---|
| 0–1,000 ft | 10 min | 15 min |
| 1,001–3,000 ft | 15 min | 20 min |
| 3,001–6,000 ft | 15 min | 20 min |
| Above 6,000 ft | 20 min | 25 min |
You can raw-pack sauerkraut, too, but times run longer. The USDA table lists 20 minutes for pints and 25 minutes for quarts at 0–1,000 feet, with added minutes at higher elevations. Hot-pack is faster and gives a steady seal rate, which is why this guide centers on it.
For full tables and container notes, see the USDA PDF guide hosted by NCHFP: Guide 6: Fermented And Pickled Vegetables.
Quality Tips That Keep Texture And Flavor
Pick The Right Cabbage
Late-season heads with tight leaves give crunch. Avoid bruised or wormy heads. Green or red both work; red kraut looks bold but may shed color into brine.
Cut Size And Salt Rate
Thin shreds pack closer and heat evenly. That helps headspace accuracy and consistent jars. Stick to canning salt so you don’t cloud the brine.
Hold Fermentation Temp
Room temps around 70–75°F move the ferment along while keeping flavor clean. Colder rooms slow it; warmer rooms can cause soft texture. Keep oxygen out, weight the cabbage, and watch for a steady tang.
Skim And Keep The Brine Clear
During fermentation, skim film as needed. A clean brine and a fresh, sour smell are good signs. Cloud or scum often means the top wasn’t well covered.
Pack With Plenty Of Brine
Kraut in the jar should be fully covered. If brine runs short after packing, add a light brine as noted above so the solids aren’t peeking above the liquid.
Troubleshooting Seals And Safety
Flat Lids Buckled Or Bent
That often tracks to over-tight rings or syrupy boil-overs. Use fingertip tight rings and keep a gentle simmer when heating the kraut to limit foaming.
Liquid Loss After Processing
Some loss can happen; the seal is what matters. Large loss points to hard boiling, uneven water level, or yanking jars too fast. Let jars rest 5 minutes in the canner before lifting.
Soft Texture
Too warm during fermentation, too little salt, or prolonged heating can soften shreds. The hot-pack step should be brief—just hot enough to pack and process.
Jar Didn’t Seal
Refrigerate the jar and eat soon, or reprocess within 24 hours with a new flat lid. Check rim chips and headspace before you try again.
How Do You Can Homemade Sauerkraut? Timing, Headspace, And Brine
Many readers type “how do you can homemade sauerkraut?” when they really mean “what time and headspace should I use?” Here’s the tidy answer: hot-pack, ½-inch headspace, and the altitude-based times above. Keep the cabbage covered with brine so heat transfer is steady. That combo gives safe jars and clean flavor.
Storage, Shelf Life, And When To Toss
Once sealed, store jars in a cool, dark place. A range near 50–70°F works well. Keep rings off during storage so you’ll spot any seal failures. Most home canners use kraut within a year for peak quality, though safe jars hold longer. If you see an unsealed lid, bulging, spurting, mold, or off smells, discard the jar without tasting.
Batch Math: How Much Cabbage For A Run?
As a rough guide, 5 pounds shredded cabbage yields about 2 quarts of finished sauerkraut. A canner load of 7 quarts often starts with 15–18 pounds, depending on shred size and water weight. Keep a spare jar ready in case the last ladle runs long.
FAQ-Adjacent Notes (Without The FAQ Page)
Can You Add Caraway Or Juniper?
Yes—add small amounts to the pot during the heat step so the flavor moves into the brine. Don’t add thickeners or starches.
Can You Pressure Can Kraut?
Stick with boiling-water canning. Kraut is high-acid, and the tested process uses water-bath times. Pressure canning can overcook texture and isn’t needed for safety here.
Can You Can Fresh, Unfermented Cabbage?
Not as sauerkraut. This process is for fermented cabbage packed in its tangy brine.
Find Your Altitude And Adjust
Processing time depends on elevation. Near sea level, use the base times. Higher up, move to the longer band. Water boils at a lower temperature as elevation rises, so extra minutes balance the heat. A quick map search for your town gives the band. If unsure, choose the longer time.
Label, Store, And Plan Meals
Date every lid, list the pack style, and note any spice tweaks. Group jars by batch to compare crunch. Keep a short shelf log so older jars get opened first. Kraut loves brats, pierogi, pan potatoes, roast pork. Rinse lightly for a softer tang, or warm with a knob of butter nicely.
Headspace Tools And Accuracy
A simple headspace gauge keeps lids from buckling and limits siphoning. Set the ½-inch step on the rim, adjust with brine, and re-check after bubble removal. Consistent headspace helps jars vent and form strong seals as they cool.
