Yes, you can can turnips at home — but only in a pressure canner. Turnips are a low-acid root vegetable. A boiling-water bath never gets hot enough to destroy Clostridium botulinum spores, so water-bath canning plain turnips is not a safe option.
That is the short answer. The useful answer is more specific: tested directions exist, the process is straightforward, and the jars will be shelf-stable if you follow those directions exactly. Quality is another matter. Extension services consistently warn that canned turnips often darken and pick up a stronger flavor in the jar. If you want a product that still tastes like a fresh turnip, freezing usually wins. If you want pantry jars for soups and stews, pressure canning is the method that works.
Why turnips cannot go in a water-bath canner
Turnips sit well above pH 4.6. In a sealed jar, that low-acid, oxygen-free environment is exactly where botulism spores can germinate if they survive processing. Water-bath canning tops out at 212°F (100°C). Pressure canning is used because it raises the temperature inside the jar to about 240°F (116°C), the range needed to kill those spores.
A splash of vinegar in the jar does not convert this into a pickle recipe. Acidifying a low-acid vegetable for water-bath canning only works when a laboratory-tested pickle formula specifies the vinegar strength, ratios, pack style, and process time. The National Center for Home Food Preservation has said it does not have recommendations for canning pickled turnips and would not assume they can be processed like pickled beets. Refrigerator pickled turnips are common. Shelf-stable pickled turnips from an untested blog recipe are not a substitute for pressure canning.
Do not use an Instant Pot, electric multi-cooker, or stovetop pressure cooker as a canner. CDC guidance is clear: those appliances are not approved for canning low-acid foods, even if they have a “canning” button. You need a pressure canner with a rack, a weighted or dial gauge, and enough capacity to hold pint or quart jars.
Decide first: can, freeze, or pickle in the fridge
Canning is the right choice when you want shelf-stable cubes for winter soups, pot roast, or a last-minute mash and you already own a pressure canner.
Freezing is the better choice when flavor and texture matter more than pantry space. Young turnips freeze well after a 3-minute water blanch. They keep a milder taste and a firmer bite than canned roots. Extension publications often recommend freezing rutabagas for the same reason they warn about canned turnips: discoloration and a harsh cooked flavor.
Refrigerator pickles are the better choice when you want crisp, pink Middle Eastern-style turnips. Those recipes belong in the fridge, not on a pantry shelf, unless you are following a tested, published canning pickle formula — and those are scarce for turnips.
If the harvest is huge and you have both a freezer and a canner, split the batch: freeze the smallest, sweetest roots and can the rest for cooking.
Choose turnips that can well
Start with small to medium roots that feel heavy and firm, with no soft spots, cracks, or woodiness. Large, overmature turnips tend to be pithy before they ever reach the jar, and canning will not fix that.
Penn State Extension lists Purple Top White Globe and Royal Crown as recommended canning varieties. Young roots no more than about 3 inches across generally hold together better than oversized storage turnips.
You will need roughly:
- 14 pounds of turnips for a canner load of 7 quarts
- 8 pounds for a canner load of 9 pints
Peeling is not optional. Soil-borne spores concentrate on skins, and peel fragments float, toughen, and taste bitter after processing. Cut off the tops, scrub under running water with a vegetable brush, peel completely, then slice or dice into even pieces so heat moves through the jar at the same rate.
Equipment and ingredients
Required
- Pressure canner (dial-gauge or weighted-gauge)
- Pint or quart mason jars made for canning, with new lids
- Jar lifter, bubble remover or plastic knife, clean towels
- Large saucepan for the hot pack
- Turnips, boiling water, and optional canning salt
Salt is flavor only. It is not a preservative here. Use ½ teaspoon per pint or 1 teaspoon per quart if you want it, or leave it out.
Do not add butter, oil, milk, bacon, flour, or soup mix to the jars. Extra fat and thickeners change heat penetration. There is no tested recipe for canned mashed turnips or turnip soup as a finished product. Can cubes; mash or soup them after you open the jar.
How to can turnips, step by step
Official directions from university extension publications and So Easy to Preserve use a hot pack only. That is the method below.
- Get the canner ready. Put the rack in the canner, add the amount of water your manufacturer specifies (often 2–3 inches), and begin heating. Wash jars in hot soapy water and keep them hot.
- Prep the roots. Wash, peel, and cut the turnips into slices or cubes.
- Hot-pack. Put the pieces in a saucepan, cover with boiling water, and boil for 5 minutes.
- Fill the jars. Pack the hot turnips into hot jars. Leave 1 inch of headspace. Add optional salt. Cover with the boiling cooking liquid, still leaving 1 inch of headspace.
- Degas and seal. Slide a bubble remover around the inside of the jar. Recheck headspace. Wipe the rims with a clean damp cloth. Apply lids and screw bands fingertip-tight — snug, not cranked down.
- Load and vent. Place jars on the canner rack so they are not touching. Lock the lid. Vent a full 10 minutes of steady steam before you close the petcock or put the weight on. Skipping the vent leaves air in the canner and can underprocess the food.
- Process at the correct pressure. Bring the canner to the pressure for your altitude and gauge type. Start timing only after that pressure is reached. If pressure drops below the target, bring it back up and restart the timer.
- Cool the canner naturally. When time is up, turn off the heat and let pressure return to zero on its own. Wait a couple of minutes, then open the lid away from your face. Lift jars out without tilting them. Cool upright, undisturbed, for 12–24 hours. Do not retighten bands.
- Check seals. Lids should be concave and not flex. Remove the bands, wash the jars, label them, and store in a cool, dark place. Unsealed jars go in the refrigerator and should be eaten soon.
Processing times and altitude
Times do not change with altitude. Pressure does.
Process time (hot pack)
| Jar size | Time |
|---|---|
| Pints | 30 minutes |
| Quarts | 35 minutes |
Dial-gauge pressure canner
| Altitude | Pressure |
|---|---|
| 0–2,000 ft | 11 lb |
| 2,001–4,000 ft | 12 lb |
| 4,001–6,000 ft | 13 lb |
| 6,001–8,000 ft | 14 lb |
Weighted-gauge pressure canner
| Altitude | Pressure |
|---|---|
| 0–1,000 ft | 10 lb |
| Above 1,000 ft | 15 lb |
These figures match Michigan State, Penn State, South Dakota State, and other extension publications that cite the same tested process.
If you do not know your elevation, look it up before you start. Using 10 lb on a weighted gauge above 1,000 feet is one of the most common ways a “follow the recipe” batch becomes unsafe.
Turnip greens are a different product
The root and the tops are not interchangeable in a canner. Greens are bulky, pack differently, and need a much longer process because heat moves slowly through a dense mass of leaves.
For turnip greens, the usual tested method is: wash until the rinse water is grit-free, strip tough stems, wilt 1 pound at a time for 3–5 minutes, pack loosely, cover with boiling water, 1-inch headspace. Process pints 70 minutes and quarts 90 minutes at the same pressures used for other greens.
Freezing still gives a better green. If you can them, plan on a lot of raw leaves — greens collapse hard in the pot.
Mistakes that ruin jars or make them unsafe
- Water-bath canning plain turnips. Not a shortcut. Not safe.
- Canning mashed or pureed turnips. Density blocks heat. Can pieces only.
- Adding extra ingredients. Onions, meat, cream, and thickeners need their own tested recipes, which this product does not have.
- Leaving the peels on. Safety and quality both suffer.
- Using oversized, woody roots. You will can bitterness.
- Skipping the 10-minute vent.
- Starting the timer before the canner is at pressure.
- Ignoring altitude.
- Treating a pressure cooker like a canner.
- Tasting from a questionable jar. Bulged lids, spurting liquid, off smells, or leaking jars get discarded without tasting. Botulism toxin has no reliable “off” flavor.
Discoloration alone is not proof of spoilage. Extension sources expect some darkening. Combine that with a bad seal, foam, or an off odor, and the jar is done.
How to store canned turnips and how long they last
Store sealed jars in a cool, dark cupboard. Avoid spots above 95°F, near a furnace, or in a hot attic. For best quality, plan to use them within a year. Safety depends on a true vacuum seal and a correct process, not on an arbitrary calendar date.
Before you eat any home-canned low-acid vegetable, CDC and USDA still recommend a second heat step: boil the food in a saucepan for 10 minutes at elevations below 1,000 feet, adding 1 minute per additional 1,000 feet. Heat destroys botulinum toxin if it were present. This is a backup, not a license to skip proper canning.
How to use jars that taste stronger than fresh turnips
Expect a more cooked, sometimes sulfurous note. That is the usual quality complaint, not a surprise defect. Use the jars where that flavor can sit in the background:
- Drain and simmer the cubes in soup, stew, or pot roast.
- Mash with butter, garlic, and cream, or mix with potatoes or carrots so the turnip is not the only voice.
- Pan-fry drained cubes in bacon fat or butter to drive off extra liquid and add browning.
- Season with acid at the end — a little vinegar or lemon — if the flavor feels flat or heavy.
If a finished jar smells sharply unpleasant after opening, do not cook your way around it. Throw it out.
Frequently asked questions
Can I raw-pack turnips? Tested extension directions for turnips specify a 5-minute boil and a hot pack. Use that method.
Can I can turnips without salt? Yes. Salt is optional.
Can I can turnips and carrots in the same jar? Only if you follow a tested mixed-vegetable recipe and use the longest process time required by any vegetable in the mix. Do not invent ratios.
Why did my turnips turn gray or brown? That is a known quality change after canning, especially with older roots. It is not automatically unsafe. Judge safety by the seal and by signs of spoilage, not by color alone.
Is it better to can or freeze turnips? Freeze for eating as a side dish. Can for pantry cooking ingredients. That split matches what extension publications have been saying for years: the process is safe; the flavor is not everyone’s favorite.
What if I only have a water-bath canner? Do not can plain turnips. Freeze them, or make refrigerator pickles.
Canning turnips is a narrow, well-documented process: peel, hot-pack, pressure-can pints 30 minutes and quarts 35 minutes, adjust pressure for altitude. Follow that, and the jars are safe to store. Decide whether you actually want that product before you fill the canner — because the freezer, for this particular root, is often the better kitchen tool.