How to Make Kimchi: The Complete Beginner's Guide

Kimchi is the most important dish in Korean cuisine. Not the most elaborate, not the most technically demanding — the most important. It appears at every Korean meal. It's the baseline. Everything else on the table exists in relationship to it.

And despite its centrality to one of the world's great food cultures, kimchi is not difficult to make.

The process requires three stages: salting, making the paste, and fermentation. None of the individual steps is complex. What requires attention is understanding what each step is doing and why — because that understanding is what lets you adapt, troubleshoot, and eventually make kimchi by feel rather than by recipe.

This is the complete guide.

What You Need to Understand First

Kimchi is a fermented food. It's not pickled in vinegar. It's not preserved with heat. It's fermented by the naturally occurring bacteria (primarily Lactobacillus) already living on the surface of the cabbage. Those bacteria eat the sugars in the cabbage and produce lactic acid, which preserves the kimchi and gives it its distinctive sour flavor.

This means kimchi is alive. The fermentation continues as long as the kimchi isn't frozen. This is why kimchi gets more sour over time — the bacteria keep working.

The salt controls the bacteria. Not all bacteria can survive at the salt concentration you create by salting the cabbage. The beneficial Lactobacillus bacteria can. Most harmful bacteria cannot. This is why kimchi doesn't go bad — the salt and the resulting lactic acid environment make it inhospitable to pathogens.

Temperature controls the speed. Fermentation happens faster at room temperature and slower in the refrigerator. Traditional kimchi is fermented at room temperature for 1-2 days (depending on climate), then moved to cold storage to slow the fermentation. This is the pattern you'll follow.

Equipment

• Large mixing bowl (the bigger the better — you'll be massaging cabbage)
• Glass jar or container with a lid (1-quart or larger)
• Rubber gloves (gochugaru stains — protect your hands)
• Small bowl for making the paste
• Box grater or food processor for aromatics

Ingredients (Makes 1 Quart)

The cabbage:

• 1 medium napa cabbage (about 2 lbs / 900g)
• ¼ cup non-iodized salt (kosher salt or sea salt — not iodized table salt, which can inhibit fermentation)

The kimchi paste:

• 4 tbsp gochugaru (coarse Korean red pepper flakes — not a substitute)
• 4 cloves garlic, minced or grated
• 1 tsp fresh ginger, grated
• 1 tbsp fish sauce (or soy sauce for vegan kimchi)
• 1 tbsp salted shrimp (saeujeot, optional — adds depth)
• 1 tsp sugar
• 2 tbsp water

The vegetables:

• 4 green onions, cut into 1-inch pieces
• 1 medium carrot, julienned (optional but common)
• ½ daikon radish, julienned (optional but traditional)

Step 1: Salt the Cabbage

Quarter the cabbage lengthwise, then cut crosswise into 2-inch pieces. Or, for a more traditional approach, quarter lengthwise and leave as long leaves (traditional kimchi is packed as whole or halved leaves).

Place in a large bowl. Sprinkle salt evenly over all surfaces and toss with your hands to distribute.

Let sit for 1-2 hours, tossing every 30 minutes. The salt will draw water out of the cabbage through osmosis. By the end, there will be a significant amount of liquid in the bowl and the cabbage will have wilted and reduced in volume by about half.

How to know it's ready: Take a piece of cabbage and bend it. It should bend without snapping. If it still snaps, it needs more time.

Rinse the cabbage 2-3 times with cold water to remove excess salt. Taste a piece — it should be pleasantly salty, not aggressively so. If it's too salty, rinse again. Squeeze out as much water as possible with your hands.

Step 2: Make the Kimchi Paste

Combine all paste ingredients in a bowl: gochugaru, garlic, ginger, fish sauce, salted shrimp (if using), sugar, and water. Mix into a thick, uniform paste.

The paste should be:

• A deep red color (the gochugaru)
• Fragrant but not sharp
• Slightly thick — like loose tomato paste

Taste it. It should taste intensely savory, spicy, and slightly sweet. It will taste too salty and too spicy on its own — that's correct. It's designed to flavor a large amount of cabbage.

Step 3: Combine and Massage

Put on your rubber gloves. This is not optional — gochugaru stains skin and nails for days.

In the large bowl, combine the drained cabbage, any additional vegetables (green onion, carrot, daikon), and the kimchi paste. Mix thoroughly with your hands, working the paste into every piece of cabbage. You're looking for complete, even coverage — every piece should be coated red.

This is satisfying work. Massage the paste into the cabbage for 3-5 minutes until everything is evenly combined.

Taste a piece. It should be spicy, savory, and well-seasoned. If it needs more salt, add a small pinch. If it needs more heat, add more gochugaru. If it needs more depth, add a splash more fish sauce.

Step 4: Pack the Jar

Pack the kimchi tightly into your jar, pressing down firmly with each addition. You want to eliminate air pockets — the kimchi should be submerged in its own liquid.

Important: Leave at least 1-2 inches of headspace at the top. The kimchi will expand as it ferments and produces gas. A sealed jar with no headspace will build pressure.

If there isn't enough liquid to submerge the kimchi, you can add a small amount of salted water (1 tsp salt per cup of water).

Step 5: Ferment

Day 1-2 (room temperature): Leave the jar at room temperature, out of direct sunlight. Open the lid once or twice a day to release the gas that builds up and press the kimchi down to keep it submerged. This is called "burping" the kimchi.

After 1-2 days (faster in warm weather, slower in cool weather), taste the kimchi. It should have developed a slight tang — the beginnings of lactic acid fermentation. When it reaches a sourness you like (or even a little before, since it will continue to develop in the refrigerator), move it to the refrigerator.

Signs fermentation is happening:

• Small bubbles visible when you press the kimchi down
• A slightly tangy smell (pleasant, not rotten)
• The kimchi tastes progressively more sour each day

Step 6: Aging

Refrigerator kimchi will continue to ferment slowly. The flavor develops over weeks and months.

Fresh kimchi (0-1 week): Crisp, bright, spicy, not yet sour. Good as a side dish. Mid-aged kimchi (1-4 weeks): The sourness develops. More complex. Excellent for eating with rice. Old kimchi (1-3 months): Very sour, funky, deeply complex. Best for cooking — kimchi jjigae (stew), kimchi bokkeumbap (fried rice), kimchi pancakes.

Most Korean households maintain kimchi at multiple stages of fermentation simultaneously for different uses.

Troubleshooting

Kimchi isn't fermenting: Could be iodized salt (inhibits bacteria), too cold an environment, or not enough time. Move to a warmer spot and wait.

Kimchi smells bad / moldy: If you see actual mold (fuzzy, colored), discard. A strong sour smell is normal. Pink brine is normal. Black or green mold is not.

Too salty: Rinse a portion with water and drain before eating. In cooking, the salt will dissipate into the dish.

Too spicy: Let it age — the heat mellows with time. Or eat smaller portions with more rice.

Too sour: Make fresh kimchi or use the sour batch for cooking where the acid is an asset.

Variations

Kkakdugi (radish kimchi): Same process using cubed daikon instead of napa cabbage. Crunchier texture, cleaner flavor.

Oi sobagi (stuffed cucumber kimchi): Cucumbers scored almost to the end, stuffed with kimchi paste. Ready to eat in 30 minutes, doesn't age as well.

Mul kimchi (water kimchi): A lighter, less spicy kimchi fermented in brine. Served as a cooling refresher alongside spicy dishes.

Yeolmu kimchi (young radish kimchi): Made with the young spring radish greens. Seasonal, ephemeral, deeply Korean.

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The first batch of homemade kimchi will not be your best batch. The second batch will be better. By the third or fourth batch, you'll have developed the feel for it — how salty the cabbage should taste before rinsing, how thick the paste should be, how sour you like it.

Kimchi is a practice, not a recipe.

Related reading: The Science of Fermentation in Korean Cooking | What Is Gochugaru? | Korean Pantry Essentials