Is It Normal for Kimchi to Bubble?

Last Updated on August 21, 2023 by Lauren Beck

You know that joyful feeling when your homemade kimchi starts playfully bubbling in its jar? It’s more than just a delightful sight – a sign that something amazing is happening. 

Let me tell you; those bubbles are nature’s way of giving you a thumbs-up, reassuring you that your kimchi is right on track.

Is It Normal for Kimchi to Bubble?

Absolutely, it’s completely normal for kimchi to bubble. The bubbles result from fermentation, where microorganisms break down sugars and produce carbon dioxide. 

So, if your kimchi is bubbling away, it’s a sign that everything is going according to plan in the fermentation dance.

How to Know if Your Kimchi Is Fermenting?

Wondering if your kimchi is doing the tango of fermentation or merely taking a nap in your fridge? Keep an eye on those bubbles! 

Fermentation happens when friendly microorganisms – think of them as kimchi’s tiny dance partners – break down sugars and produce carbon dioxide. 

This delightful carbonation creates those bubbles, confirming that your kimchi is undergoing its transformation from simple cabbage to complex, tangy delight.

Can I Leave Unopened Kimchi at Room Temperature?

While kimchi thrives on warm and cozy fermentation, leaving unopened jars at room temperature for extended periods isn’t recommended. 

Too much warmth can speed up fermentation, potentially leading to overly sour and mushy kimchi. Store your unopened jars in the fridge to maintain that perfectly balanced flavor and texture.

Why Is the Kimchi So Sour Tasting?

Embrace the tanginess! The sour taste of kimchi results from lactic acid produced during fermentation. This tartness adds depth and character to the otherwise mild cabbage. 

So, if your kimchi puckers your lips, know its flavorful journey is underway.

Why Is Kimchi Fizzy?

Kimchi on a Tub

Imagine taking a sip from a sparkling soda but with a kimchi twist. The fizziness in kimchi directly results from carbon dioxide being released during fermentation. 

It’s a natural occurrence that adds an effervescent element to the mix. Don’t worry; this fizz won’t tickle your nose like a soda – it’s all about that lively fermentation action.

How Long Does Kimchi Last?

Kimchi might not last as long as you’d think, especially once the jar has been opened. An opened jar can keep its deliciousness in the fridge for about three to six months. But don’t fret if you find your kimchi’s flavor evolving; it’s aging gracefully, like a fine wine.

What Does Kimchi Taste Like?

Kimchi is like a flavor party in your mouth. It’s spicy, tangy, slightly salty, and sweet, perfectly harmonious [1]. 

The depth of flavors comes from combining the main ingredients – usually Napa cabbage, garlic, ginger, and chili pepper flakes – mingling with the magic of fermentation.


As someone who’s been captivated by the magic of kimchi for years, let me tell you this: the bubbling is where the excitement begins. It’s the curtain rising on a natural spectacle of transformation, where ordinary ingredients become extraordinary.

Embrace those bubbles, for they’re a testament to the dance of life within your kimchi, a delicious journey that’s both art and science.

So, revel in the fizz, relish the tang, and savor each bite – you’re experiencing the wonder of fermentation firsthand.


Lauren Beck
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