An easy homemade tutorial on how to ferment vegetables in a mason jar.

You’re probably thinking I’ve caught the hippie train straight out of here with this post but hear me out.

Do you like pickles? Yes? (note -you should check out this post on how to make simple homemade pickles and spicy garlic dill pickles if so).

Ok then, you’re going to like fermented vegetables. 

So read on.

An easy homemade tutorial on how to ferment vegetables in a mason jar.
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Unfortunately, I had to be on antibiotics 3 times over the last 6 months.

I absolutely hate taking them and believe me, if there was a way I could’ve avoided it, I would’ve.

I’m a huge proponent of probiotics so while I was filling prescriptions in the drug store these past few months, I was simultaneously buying some kick ass probiotics to try and help keep some good bacteria in my system.

And let me tell you, the *good* probiotic pills, yeah, well they’re costly.

Six times more costly than the antibiotics in fact.

So, when the second round of antibiotics came around, I decided that instead of spending $30 on probiotic pills and $4 kombucha bottles every time I ventured into the hippie-mart (my loving name for the local natural foods store), I should probably look into this whole lacto-fermented vegetable thing.

Lacto-fermented vegetables

Lacto-fermented…it sounds crazy, right?

First thing I thought was “wait, there’s milk in this?”

Um, no. Lacto, in this case, doesn’t refer to milk, it refers to lactic-acid.

The naturally occurring bacteria on fruits and vegetables is called lactobacillus. When they’re placed in an oxygen free environment, the bacteria convert sugar into lactic acid which is what gives fermented foods their characteristic tangy/sour flavor.

So now that the science lesson is out of the way, here’s the cool part:

Vegetables + water + salt + a few days = a probiotic powerhouse of tangy vegetable deliciousness.

Bonus: it doesn’t cost $30 and they’ll last in the fridge for months.

How to Ferment Vegetables

What you’ll need to ferment vegetables:

  • 1 quart wide mouth mason jar
  • plastic lid
  • sea salt
  • water

These are the basics. There’s a whole world of fermentation supplies that can be purchased to make the process both easier and safer once you’ve got the method down.

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You can literally ferment whatever vegetables you like. If you ferment cabbage you get red cabbage sauerkraut!

They’re perfect for snacking on or adding to your meals for a probiotic boost.

I’ve been adding them to salads, on top of my protein with lunch or dinner or, just picking at them throughout the day when I’m bored.

I do the same with pickled garlic scapes – another vegetable that transforms into a tangy delight once fermented/pickled.

Yeah, a lot of that.

And this is where I’m going to sound like a total nerd, but every time I eat them I silently say “take that, antibiotics.”

Kimchi is an Asian version of fermented vegetables so if you like that, you’ll definitely like these fermented vegetables.

Also make sure to try out this bulgogi kimchi rice plate and this kimchi potato hash.

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4.52 from 285 votes

How To Ferment Vegetables

Servings: 10 servings
Prep: 4 days
Total: 4 days
How to ferment vegetables
An easy homemade tutorial on how to lacto-ferment vegetables in a mason jar.

Ingredients 

  • sliced or chopped vegetables, anything will do, I really like broccoli, radishes and carrots
  • 2 cups water
  • 1 1/2 tablespoon coarse sea salt
  • 1 quart wide mouth mason jar with plastic lid, not necessary, but if you’re going to do this often, the regular metal lids will corrode from the acid
  • any spices or herbs you like, peppercorns, dill, basil, bay leaf, etc.
  • 1 small cabbage leaf

Instructions 

  • Place vegetables and any spices/herbs you’re using in the mason jar right up to the bottom of the neck, there should be about 1 inch of space to the top.
  • Stir the salt and water together until dissolved.
  • Pour the salt water over the vegetables until it reaches just below the top of the jar. There should be about 1/2 inch of room left.
  • Fold a small cabbage leaf and press it down on top of the vegetables so that it keeps the vegetables submerged in the salt water. This isn’t necessary, but helps make sure the vegetables are submerged. Feel free to skip this step if you don’t have cabbage on hand.
  • Close the lid on the jar tightly and place the jars out of direct sunlight in a relatively moderate temperature (68-75 degrees).
  • You will start to see some bubbling around day 2 or so. After day 2, over a sink (in case it leaks/drips), gently loosen the lids to let some of the gas escape once or twice a day.
  • The vegetables are ready anywhere from day 4-10. The longer they sit, the more tangy they’ll be. Taste them starting on day 4 to figure out your preference. I like them best around day 5 or 6.
  • Once you decide they’re the level of sourness you’re looking for, place the the jar in the refrigerator where it will keep for a couple of months (not that they’ll last that long!)

Nutrition

Serving: 1SERVINGCalories: 11kcalCarbohydrates: 2gProtein: 1gSodium: 959mgFiber: 1gSugar: 1g

Nutrition information is automatically calculated, so should only be used as an approximation.

Additional Info

Course: Guides
Cuisine: American
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Founder and Writer at Running to the Kitchen | About

Gina Matsoukas is an AP syndicated writer. She is the founder, photographer and recipe developer of Running to the Kitchen — a food website focused on providing healthy, wholesome recipes using fresh and seasonal ingredients. Her work has been featured in numerous media outlets both digital and print, including MSN, Huffington post, Buzzfeed, Women’s Health and Food Network.

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244 Comments

  1. Thank you for this recipe! Quick questions: what temperature is the water, and could I use an old pickle jar instead of the mason jars? I’m avoiding plastics where possible to decrease PFAS exposure.

    1. Pickle jars are fine. The mason jars are also glass unless you’re talking about a plastic fermentation lid. Water should be about room temperature (65-72°).

  2. 5 stars
    This was a fantastic article and I thank you for gifting the world with this easy-to-follow guide.

    I will try this out ASAP and hopefully it will help me with some of my IBS, bloating and malabsorption issues.

    I have one question though. I have a large mason jar with a glass lid and a silicone gasket. It’s one of those that has metal rings around it with a lever that locks shut.

    Can this work for making fermented vegetables, like kimchi?

    I’m excited because I’ve read and heard several times that homemade kimchi is much higher in probiotics than store-bought, which (as a guess) probably ferment things to a minimum degree of time.

    1. I’ve never tried with that type of jar but it should work. No harm in trying besides a bit of wasted veggies!