Insufficient rinsing after brining Solution: Rinse thoroughly next time. For this batch, add thick slices of raw daikon radish to the jar; they will absorb excess salt.

Too cold or too much salt inhibited the bacteria Solution: Move to a warmer spot (20-22°C). Ensure salt ratio follows the recipe closely next time.

Ambient temperature was too high Solution: Refrigerate immediately. Use this batch for stews (Kimchi-jjigae) where high acidity is a benefit.

Use of iodized salt or low-quality sea salt; or old cabbage Solution: Always use Korean coarse salt (Cheonilyeom) or high-quality additive-free sea salt. Avoid table salt with iodine or anti-caking agents.

How to Make Kimchi

Name: Kimchi
Total time: 21 d
Yield: ~2L
Cuisine: Fermented
Ingredients: 1 large head (~1.5kg) Napa cabbage; 1/2 cup Coarse sea salt; 1/2 cup Gochugaru; 3 tbsp Fish sauce; 8-10 cloves Garlic; 1 inch piece Fresh ginger; 4-5 stalks Green onions; 1 cup Daikon radish; 2 tbsp flour + 1 cup water Rice flour paste; 1 tbsp Sugar

Kimchi is Korea's iconic fermented vegetable dish, traditionally made with napa cabbage and a fiery paste of gochugaru (Korean red pepper flakes), garlic, ginger, and fish sauce. It is both a side dish and a cooking ingredient used in countless Korean recipes.

Category: Vegetables · Method: Lactic Acid · Time: 7-21d · Difficulty: 2/5 · Yield: ~2L · Temp: 15-20°C

History

Kimchi dates back over 2,000 years in Korean history. Originally a simple salted vegetable preservation, it evolved after chili peppers arrived from the Americas in the 16th century. Today, there are over 200 varieties of kimchi.

Ingredients

1 large head (~1.5kg) Napa cabbage — Fresh and crisp
1/2 cup Coarse sea salt — For brining
1/2 cup Gochugaru — Korean red pepper flakes
3 tbsp Fish sauce — Or use soy sauce for vegan version
8-10 cloves Garlic — Minced
1 inch piece Fresh ginger — Minced
4-5 stalks Green onions — Cut into 1-inch pieces
1 cup Daikon radish — Julienned
2 tbsp flour + 1 cup water Rice flour paste — Cooked and cooled
1 tbsp Sugar — Feeds the fermentation

Equipment

Large basin for brining
Colander
Mixing bowl for paste
Gloves (chili can irritate skin)
1-2 liter fermentation jar
Kitchen scale

Instructions

Brine the cabbage
Quarter the cabbage lengthwise. Dissolve 1/2 cup coarse sea salt in 6 cups of water to create a brine. Soak cabbage for 6-8 hours or overnight, turning occasionally. The cabbage is ready when the thickest white parts can be bent without snapping; they should be pliable but not mushy.
Time: 6-8 hours
Tip: Sprinkle extra salt directly between the thick white layers of the leaves before submerging in the brine for even softening.
Ferment
Press down firmly to remove air pockets and ensure the paste coats everything. Leave 2 inches of headspace as the kimchi will expand and bubble. Ferment at room temperature (15-20°C) for 2-5 days until it reaches a pleasant tang, then transfer to the refrigerator for at least 2 weeks to allow the flavors to mature and the 'jang' (ferment) to mellow.
Time: 2-5 days at room temp
Tip: Burp the jar daily to release CO2. If a thin white film (Kahm yeast) appears on the surface, scrape it off immediately with a clean spoon to prevent it from affecting the flavor.

Fermentation Timeline

Day 1: Salting and prep — Cabbage brines and paste is prepared.
Day 2: Fermentation starts — Bubbles appear. Kimchi starts developing tangy notes.
Day 3-4: Active fermentation — Strong bubbling. Sour flavor develops. Still quite fresh tasting.
Day 5-7: Young kimchi ready — Balanced sour and spicy. Good crunch. Can eat now or refrigerate.
Week 2-4: Mature kimchi — Deeper, more complex flavors. Softer texture. Ideal for cooking.

Signs of Success & Spoilage

Good signs

Active bubbling during fermentation
Bright red color maintained
Pleasantly sour and spicy aroma
Crisp-tender texture
Tangy, umami-rich taste

Warning signs

Fuzzy mold (white, green, or black)
Slimy or overly soft/mushy texture
Off-putting rotten or putrid smell
Discoloration to brown or gray
Persistent Kahm yeast that has been left to grow thick

Troubleshooting

Too salty: Cause: Insufficient rinsing after brining Solution: Rinse thoroughly next time. For this batch, add thick slices of raw daikon radish to the jar; they will absorb excess salt.
Not fermenting: Cause: Too cold or too much salt inhibited the bacteria Solution: Move to a warmer spot (20-22°C). Ensure salt ratio follows the recipe closely next time.
Too sour too fast: Cause: Ambient temperature was too high Solution: Refrigerate immediately. Use this batch for stews (Kimchi-jjigae) where high acidity is a benefit.
Bitter taste: Cause: Use of iodized salt or low-quality sea salt; or old cabbage Solution: Always use Korean coarse salt (Cheonilyeom) or high-quality additive-free sea salt. Avoid table salt with iodine or anti-caking agents.

Storage

Press down to keep submerged. Store in airtight container in refrigerator. Keeps Several months in refrigerator. Flavor continues developing. Young kimchi is crisp and fresh; aged kimchi is softer and tangier, perfect for cooking.

Health Benefits

Packed with probiotics
High in vitamins A, B, and C
Contains beneficial antioxidants
Good source of fiber
May boost immune system
Supports digestive health

Serving Suggestions

Essential banchan (side dish) with Korean meals
Kimchi fried rice (kimchi bokkeumbap)
Kimchi jjigae (stew)
Topping for noodles and rice bowls
Grilled cheese with kimchi
Kimchi pancakes (kimchijeon)

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