Everyday Korea

Why Do So Many Korean Homes Have a Separate Refrigerator Just for Kimchi?

August 22, 2026

Walk into some Korean kitchens and you may notice something that initially looks a little excessive: two refrigerators.

One is the familiar tall refrigerator for daily groceries. The other may be a low, wide appliance with lids, or a separate upright cabinet with multiple compartments.

A separate upright kimchi refrigerator standing beside a standard refrigerator in a Korean apartment kitchen

It is called a kimchi-naengjanggo: a kimchi refrigerator.

For a visitor, the obvious question is fair. Why would a household need another refrigerator for one fermented side dish?

The answer is that kimchi is not quite “finished” when it goes into a container.

Kimchi keeps changing in storage

Kimchi is fermented food. After cabbage, radish or another ingredient has been salted, seasoned and packed away, fermentation continues. That means storage temperature affects how quickly kimchi becomes more sour, how its texture develops and how its flavor changes over time.

Research from the World Institute of Kimchi describes kimchi as commonly stored at low temperatures of about 2–6°C. Its experiments found that fermentation temperature changed both the bacterial community and the kimchi’s metabolic profile. In plain English: temperature is part of the recipe even after the jar is closed.

Warmer storage generally pushes fermentation along faster. Colder storage slows it down. For people who care whether their kimchi tastes fresh, lightly ripened or deeply sour, that control is useful.

That is the real point of the kimchi refrigerator. It is not just an odor-separation box, although keeping powerful-smelling kimchi containers out of the main refrigerator can certainly be convenient. It is an appliance designed for a food that is supposed to keep evolving after it is made.

Why not use an ordinary refrigerator?

An ordinary refrigerator can absolutely store kimchi. No one needs a specialized appliance to keep a jar cold, and a kimchi refrigerator is not a requirement for making kimchi at home.

But a kimchi refrigerator is built around more specific storage choices. Its compartments can have separate settings intended for kimchi fermentation and long-term storage. An LG owner’s manual, for example, includes a Kimchi+ setting for freshly made cabbage kimchi and notes that storage choices can affect fermentation or even cause some foods to freeze.

There is also a much less romantic reason: volume. Kimchi is often kept in sizeable containers, and those containers can claim a large share of an ordinary family refrigerator. A separate appliance gives kimchi room without turning the main fridge into a wall of sealed tubs.

So the appliance solves two problems at once: it provides more controlled cold storage for a fermenting food, and it frees up space for everyday groceries.

Before refrigerators, there were buried crocks

The idea makes even more sense when you look at how kimchi was historically stored.

Kimchi was traditionally kept through winter in large clay crocks buried underground. The ground provided a relatively stable environment for preserving fermented food during the season.

Then Korean homes changed. A historical study of the appliance traces a “kimchi problem” to rapid changes in living environments during the 1960s and 1970s, especially the spread of urban apartments. Apartment residents did not have a convenient yard in which to bury storage crocks.

The challenge was not that people suddenly stopped wanting kimchi. It was that an old storage method no longer fit the place where many people lived.

Appliance makers experimented with alternatives. The same historical research identifies a Goldstar electric kimchi refrigerator from 1984 as the first known appliance of this kind. The category developed over time, but the basic ambition was already clear: bring more controlled kimchi storage indoors.

That makes the kimchi refrigerator less of a novelty than it first appears. It is a modern answer to a very old preservation problem.

Is it really just for kimchi?

Not necessarily.

Kimchi is the appliance’s cultural and technical starting point, which is why the name stuck. But modern kimchi refrigerators are often multipurpose. The LG manual lists settings for produce, rice and grains, meat and fish, refrigerator storage and freezer storage alongside kimchi modes.

That flexibility matters. A household may use one compartment for kimchi, another for produce, and another for meat, fish or grains. Depending on the season, the amount of kimchi on hand and the household’s eating habits, the same appliance can become extra cold-storage space for several kinds of food.

So “a second refrigerator just for kimchi” captures the outsider’s surprise, but it is not quite the whole story. It is better understood as a specialized storage appliance designed around kimchi first.

How common are they?

Very common—but not universal.

Korea Gallup’s 2025 survey found that 85% of respondents reported having a kimchi refrigerator in their household. The survey covered 5,251 people aged 13 and older nationwide, excluding Jeju, and the figure was down from 90% in 2021.

That is widespread enough to explain why the appliance feels like a familiar part of Korean domestic life. But it also rules out the easy cliché that every Korean home has one. Household size, kitchen space, age, food habits and how much kimchi a household keeps all make a difference.

A refrigerator designed to manage change

The kimchi refrigerator becomes much less mysterious once you stop seeing it as a shrine to cabbage.

It manages a fermented food that continues changing in the cold. It creates room for bulky containers. And it adapts the logic of buried winter crocks to apartment kitchens and year-round home life.

A regular refrigerator is meant to keep food cold. A kimchi refrigerator is designed to help a particular food change more slowly, and more predictably. That is why the second appliance can make perfect sense.