How to Make Kimchi: Korea's Most Iconic Fermented Food
The first time I tried to make kimchi, I called my Korean friend in a mild panic because I wasn't sure if I'd done it right.
She laughed for longer than I think was necessary.
"You'll know when it's ready," she said. "It'll smell like itself."
That was not as helpful as she meant it to be. But she was right.
Kimchi making — kimjang — is one of those processes that sounds simple until you're standing in a kitchen with red pepper paste on your forearms and cabbage leaves stacked on every available surface. I made my first batch on a grey November afternoon with an elderly neighbor who spoke almost no English and communicated entirely through hand gestures and approving or disapproving sounds.
We salted the cabbage. We made the paste — gochugaru, garlic, ginger, fish sauce, more garlic, she kept adding garlic, I stopped questioning it. We worked the paste into every leaf by hand. She showed me how to fold each one into the jar so it sat tight, how to press the air out, how to leave just enough room for it to breathe.
We tasted it immediately. It was good. Three days later it was better. Three weeks later it was exactly what kimchi is supposed to be.
Some foods you buy. Kimchi you make, and something about the making is part of what makes it taste the way it does.
The Soul of Korean Food
There is no dish more closely associated with Korea than kimchi. It appears at every Korean meal, from a simple bowl of rice to an elaborate feast. It has been eaten for centuries, evolved across regions and generations, and is now recognized by UNESCO as part of Korea's intangible cultural heritage.
But kimchi is more than just food. It is a living culture — literally, since it is fermented — that connects Koreans to their history, their families, and their identity. Learning to make kimchi is not just learning a recipe. It is stepping into the heart of Korean culture.
What Is Kimchi?
Kimchi is a traditional Korean dish of fermented vegetables — most commonly napa cabbage — seasoned with a paste made from chili powder, garlic, ginger, fish sauce, and other ingredients. The fermentation process, which can take anywhere from a few days to several months, transforms the raw vegetables into something deeply complex: tangy, spicy, umami-rich, and alive with beneficial probiotics.
There are over 200 documented varieties of kimchi in Korea. While baechu kimchi — made with napa cabbage — is the most well-known, kimchi can be made from radishes, cucumbers, spring onions, mustard leaves, and dozens of other vegetables. Each region of Korea has its own traditional varieties, and every family has its own recipe passed down through generations.
Ingredients You Will Need
Making traditional baechu kimchi at home requires a specific set of ingredients. Some may require a trip to a Korean grocery store, but most are increasingly available in Asian supermarkets worldwide.
For the cabbage:
- 1 large napa cabbage (about 2 kg)
- 1/2 cup coarse sea salt (not table salt)
- Water for soaking
For the kimchi paste:
- 1/2 cup gochugaru (Korean red chili flakes) — this is non-negotiable, regular chili powder will not give the right flavor or color
- 1 tablespoon fish sauce (or soy sauce for a vegan version)
- 1 tablespoon salted fermented shrimp (saeujeot) — optional but adds deep umami flavor
- 1 tablespoon sugar
- 6 cloves garlic, minced
- 1 teaspoon fresh ginger, grated
- 4 spring onions, cut into 2cm pieces
- 1 medium carrot, julienned
- 1/2 cup water or dashima (kelp) stock
Step-by-Step: How to Make Kimchi
Step 1: Salt the Cabbage Cut the napa cabbage into quarters lengthwise, then into roughly 5cm pieces. Place in a large bowl and sprinkle generously with coarse sea salt, working the salt into each leaf with your hands. Add water to cover and let it soak for at least 2 hours, or up to overnight. The cabbage should wilt significantly and release water. Rinse thoroughly under cold water 2–3 times to remove excess salt, then squeeze out as much water as possible. Taste — it should be pleasantly salty but not overwhelming.
Step 2: Make the Kimchi Paste Combine gochugaru, fish sauce, salted shrimp, sugar, minced garlic, and grated ginger in a bowl. Add just enough water or kelp stock to bring it together into a thick paste. Taste and adjust — more gochugaru for heat, more fish sauce for umami, more sugar to balance. This paste is the heart of your kimchi.
Step 3: Prepare the Vegetables Add the julienned carrots and spring onions to the kimchi paste and mix well. These vegetables will ferment alongside the cabbage and add texture and flavor.
Step 4: Mix Everything Together Wearing rubber gloves — gochugaru will stain your hands — add the salted cabbage to the paste mixture. Using your hands, massage the paste thoroughly into every leaf of cabbage. Make sure every piece is evenly coated. This step requires a bit of effort but is essential for even fermentation and flavor.
Step 5: Pack and Ferment Pack the kimchi tightly into clean glass jars or an airtight container, pressing down firmly to remove air pockets. Leave about 2–3 cm of space at the top as the kimchi will expand during fermentation. Seal and leave at room temperature for 1–2 days, then transfer to the refrigerator.
My first batch fermented for three days before I touched it — and when I finally opened the jar, the smell was so intensely right that I texted my Korean friend a photo at midnight. She replied with a single thumbs up. High praise.
Where to buy ingredients: Korean grocery stores (H-Mart internationally) or Gmarket for online delivery in Korea. Typical cost to make at home: 15,000–25,000 KRW for a full batch using one large cabbage. Pro tip: Wear disposable gloves when mixing the paste — gochugaru stains deeply and the smell lingers. Ferment at room temperature for 1–2 days before moving to the fridge for best results.
How Long to Ferment and How to Store
One of the most common questions about homemade kimchi is how long to ferment it. The answer depends entirely on your personal preference.
Fresh Kimchi (geotjeori): Eaten immediately after making, without any fermentation. Crunchy, bright, and less sour. Great for those new to kimchi.
Lightly Fermented (1–3 days at room temperature): The kimchi begins to develop its characteristic tang. Slightly fizzy, more complex flavor. This is the sweet spot for many people.
Fully Fermented (1–4 weeks in the refrigerator): Deeply sour, complex, and intensely flavored. The kimchi softens significantly. This is the traditional way to eat kimchi and the stage used for cooking kimchi jjigae and kimchi fried rice.
Aged Kimchi (3+ months): Intensely sour and funky. Not for everyone, but prized by kimchi connoisseurs for its depth of flavor.
Once in the refrigerator, kimchi can last for several months to over a year. The flavor will continue to develop slowly. Always use clean utensils when removing kimchi from the jar to prevent contamination.
Ways to Eat and Cook With Kimchi
Once you have your kimchi, the possibilities are almost endless.
As a side dish: The simplest and most traditional way. Serve alongside rice and other Korean dishes as part of a full Korean meal spread.
Kimchi Jjigae (Kimchi Stew): One of Korea's most beloved comfort foods. Simmer aged kimchi with pork belly or tofu, gochugaru, and anchovy stock for a deeply warming stew. Best made with well-fermented kimchi.
Kimchi Fried Rice: A quick and satisfying meal using day-old rice, chopped kimchi, kimchi brine, sesame oil, and a fried egg on top. One of the most popular ways to use up older kimchi.
Kimchi Pancakes (Kimchijeon): A crispy savory pancake made with chopped kimchi and a simple batter. Perfect as a snack or appetizer, especially on rainy days — there is a beloved Korean saying that rain calls for kimchi pancakes and makgeolli.
Kimchi Grilled Cheese: A modern fusion favorite. The tangy, spicy kimchi pairs surprisingly well with melted cheese between toasted bread. A testament to kimchi's global versatility.
Have you made kimchi at home? Tell me how it went — the good, the bad, and how long yours lasted before it was gone.
Tags: How to make kimchi, kimchi recipe, Korean fermented food, kimchi at home, Korean cooking, kimchi jjigae, K-food
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