How Do You Can Swiss Chard

You can Swiss chard by water bath canning it, and it’s one of the most straightforward ways to preserve this leafy green for your pantry.
 
When you can Swiss chard, you’re essentially pressure canning it because Swiss chard is a low-acid vegetable, and water bath canning alone isn’t safe for it.
 
If you’re wondering how do you can Swiss chard at home, the process involves blanching the leaves, packing them into jars, and processing them in a pressure canner to ensure they’re shelf-stable.
 
In this post, we’ll walk you through every step of how to can Swiss chard, from prepping your harvest to storing those finished jars.
 
Let’s dive into the details so you can confidently can Swiss chard this season.
 

Why You Can Swiss Chard With a Pressure Canner

The first thing to know about how do you can Swiss chard is that this green is a low-acid food, which means it requires high heat to kill harmful bacteria like botulism.
 
Water bath canning only reaches temperatures around 212°F, which isn’t hot enough to safely can Swiss chard.
 
A pressure canner, on the other hand, reaches temperatures of 240°F or higher, which is essential when you can Swiss chard.
 
So, when you’re planning to can Swiss chard, skip the water bath method entirely and use a dial-gauge or weighted-gauge pressure canner instead.
 
This isn’t just a suggestion; it’s the only safe way to can Swiss chard and other leafy greens at home.
 

1. Choose Fresh, Tender Leaves

The quality of your harvest plays a huge role in how well you can Swiss chard, so pick young, tender leaves that are free from blemishes or wilting.
 
Older, tough chard leaves can become fibrous after canning, so stick with the freshest greens you can find.
 
You can Swiss chard with the stems included, but many home canners prefer to remove the thick stalks because they take longer to soften.
 
If you keep the stems, just know they’ll be quite tender after processing, which some people actually enjoy.
 

2. Wash Thoroughly to Remove Grit

Swiss chard loves to trap dirt and sand in its crinkly leaves, so washing is a critical step before you can Swiss chard.
 
Fill your sink with cold water and swish the leaves around to loosen any debris, then rinse each leaf individually under running water.
 
You don’t want gritty chard in your jars, so take your time with this step.
 
Once they’re clean, you’re ready to move on to blanching, which preps the greens for canning.
 

3. Blanch Before Packing

Blanching is a quick boil or steam treatment that stops enzyme activity and helps the chard shrink down for easier packing.
 
When you can Swiss chard, blanching also helps preserve the bright green color and keeps the texture from turning mushy.
 
Bring a large pot of water to a rolling boil, then add your chard leaves and let them cook for about 2 to 3 minutes.
 
Drain the chard immediately and plunge it into ice water to stop the cooking process, then squeeze out excess moisture.
 
Now your chard is ready to be packed into jars, and this step is where the real canning magic begins.
 

4. Pack Jars and Add Liquid

When you can Swiss chard, you have two packing options: hot pack or raw pack, and hot pack is the recommended method for this green.
 
For a hot pack, fill your sterilized pint or quart jars with the blanched chard, leaving about 1 inch of headspace.
 
Then pour boiling water over the chard, still maintaining that 1 inch of headspace, and remove any air bubbles with a bubble remover tool.
 
You can also add a pinch of salt to each jar for flavor, though it’s not necessary for preservation when you can Swiss chard.
 
Wipe the jar rims with a clean, damp cloth to ensure a proper seal, then place the lids and bands on finger-tight.
 

Processing Times for Canning Swiss Chard

Getting the processing time right is the heart of how do you can Swiss chard, and it depends on both your jar size and your altitude.
 
At altitudes below 2,000 feet, you’ll process pints for 70 minutes and quarts for 90 minutes in a pressure canner at 10 pounds of pressure.
 
If you’re above 2,000 feet, you’ll need to adjust the pressure to 15 pounds, and always check your canner’s manual for exact guidelines.
 
When you can Swiss chard, it’s crucial to maintain a steady pressure throughout the entire processing time.
 
Fluctuating pressure can lead to under-processing, which is a food safety risk you absolutely want to avoid.
 
Once the time is up, turn off the heat and let the canner depressurize naturally, which can take 30 to 45 minutes.
 
Don’t rush this by trying to cool the canner with cold water, as that can cause siphoning or broken jars.
 

1. Test the Seals After Cooling

After the canner has fully depressurized, carefully remove the jars and place them on a towel to cool for 12 to 24 hours.
 
You’ll know the canning was successful if you hear that satisfying “pop” sound as each lid seals.
 
Once the jars are cool, press down on the center of each lid, and if it doesn’t flex, you’ve got a good seal.
 
If any jars didn’t seal properly, just store them in the fridge and use the chard within a few days, or reprocess them with fresh lids.
 

2. Store in a Cool, Dark Place

Proper storage helps your canned chard maintain its quality, so label each jar with the date and place them in a cool, dark pantry.
 
Canned Swiss chard will easily last for 12 to 18 months, though you’ll likely use it up long before then.
 
Avoid storing jars in direct sunlight or near a heat source, as that can degrade the color and flavor over time.
 
And remember, once you open a jar of canned chard, treat it like fresh greens and refrigerate any leftovers.
 

Creative Ways to Use Your Canned Swiss Chard

Once you’ve successfully canned Swiss chard, you’ll wonder why you didn’t try this preservation method sooner, because it’s so versatile.
 
You can add canned chard directly to soups, stews, and pasta dishes without any extra cooking since it’s already fully cooked.
 
It also works beautifully in omelets, quiches, or as a simple side dish when sautéed with garlic and olive oil.
 
When you can Swiss chard, you’re essentially storing convenience, because the greens are ready to use at a moment’s notice.
 
Toss a handful into your morning smoothie for a sneaky nutrient boost, or mix it into casseroles for extra bulk.
 
The flavor of canned chard is milder than fresh, but it still carries that earthy, slightly salty taste that pairs well with so many meals.
 

So, How Do You Can Swiss Chard?

You can Swiss chard by pressure canning it, and it’s a safe, rewarding way to preserve this garden staple.
 
The process boils down to washing, blanching, packing with boiling water, and processing in a pressure canner for the correct time.
 
If you follow the exact steps we’ve covered for how do you can Swiss chard, you’ll end up with tender, delicious greens all winter long.
 
Always prioritize safety by using a pressure canner, adjusting for altitude, and checking your seals after processing.
 
So grab your harvest, fire up that canner, and enjoy the satisfaction of seeing rows of jars filled with your very own canned Swiss chard.
 
Happy canning, and don’t forget to share your results with friends who’ve been asking the same question about how to can Swiss chard.