What is kimchi?
Kimchi is a traditional Korean dish consisting of fermented vegetables, primarily napa cabbage (Chinese cabbage), seasoned with a blend of spices including garlic, ginger, and gochugaru (Korean red pepper powder). This fermented food is known for its complex flavor that combines spicy, salty, and umami notes, along with a characteristic crunchy texture.
The natural fermentation process of kimchi not only gives it its distinctive tangy flavor but also makes it a rich source of probiotics and essential nutrients. The versatility of kimchi has made it a fundamental ingredient in modern cuisine, as it can be consumed alone as a side dish or incorporated into a wide variety of dishes, from stews to fried rice.

What type of cabbage is best for kimchi?
Napa cabbage, also known as Chinese cabbage or baechu, is the ideal variety for traditional kimchi due to its crispy texture and soft leaves that perfectly absorb flavors. Its thick leaves at the base and more delicate tips make it perfect for fermentation.
Ideal Cabbage Characteristics
- Freshness: Leaves should be firm and crispy, without brown or yellowish spots, ensuring optimal fermentation and clean flavor.
- Size: A medium cabbage (2-3 pounds) is ideal for maintaining consistency in fermentation and easy handling during preparation.
- Color: Pale green on the outer leaves and creamy white in the center, indicating fresh cabbage at its optimal ripeness.
- Texture: Thick but flexible leaves, without cracks or damage, allowing better absorption of seasonings during the process.
Alternatives to Napa Cabbage
- Regular green cabbage: Less traditional but functional, produces a more robust kimchi with firmer texture during fermentation.
- Purple cabbage: Provides a unique color and sweeter flavor, ideal for those seeking a more modern and visually attractive version.
- Baby cabbage: Perfect for small portions and quick fermentation, great for beginners or experimentation.
Selection Tips
- Season: The best napa cabbage is found in fall and winter, when cold temperatures improve its texture and flavor.
- Weight: Should feel heavy for its size, indicating good water content and optimal freshness for fermentation.
- Compact: Leaves should be firmly joined, without gaps between them, ensuring fresh and healthy cabbage.
- Aroma: Should have a fresh and clean smell, without any strong or unpleasant odors indicating deterioration.
Proper cabbage selection is fundamental for achieving quality kimchi, as it represents the foundation of this traditional Korean preparation. Good cabbage not only ensures successful fermentation but also directly influences the final texture and flavor of the kimchi.

How to Clean and Cut the Cabbage
Proper cleaning and cutting of napa cabbage is a fundamental step in achieving quality kimchi. This process requires attention and precision to maintain the integrity of the leaves and ensure uniform fermentation.
Cleaning Process
- Initial inspection: Remove damaged or wilted outer leaves, keeping only fresh and crispy leaves to ensure the final quality of the kimchi.
- Exterior washing: Rinse the whole cabbage under cold running water to remove dirt and surface residue, ensuring thorough cleaning.
- Deep cleaning: Carefully separate the leaves and wash individually, paying special attention to the base where dirt and other residue tend to accumulate.
- Initial drying: Drain excess water in a large colander or on paper towels to prevent the kimchi from becoming too watery.
Cutting Technique
- Base cut: Make a deep cut at the base of the cabbage, keeping the top part intact to keep the leaves together during the process.
- Main division: Split the cabbage into two equal halves following the natural line, ensuring a clean and precise cut.
- Quarter cuts: Divide each half again to obtain four equal parts, maintaining the natural structure of the cabbage.
- Final size: Cut each quarter into 2-3 inch pieces, maintaining the natural shape of the leaves for a traditional presentation.
Important Tips
- Uniformity: Maintain consistent size in cuts for even fermentation and a more attractive kimchi presentation.
- Handling: Treat the leaves gently to avoid bruising that could affect the final quality of the kimchi.
- Preparation: Have all utensils ready before starting the process to make kimchi preparation more efficient.

Tips for Achieving the Perfect Crunchy Texture
The crunchy texture is one of the most important and desired aspects of kimchi. To achieve this distinctive characteristic, it's essential to follow specific tips during preparation.
Initial Preparation
- Once you've selected fresh and firm cabbage, cleaned and cut into uniform pieces as mentioned earlier, it's fundamental to ensure each piece maintains its structural integrity to achieve the desired texture.
- After this initial process, it's crucial to drain and completely dry the cabbage after the initial washing, before beginning the salting process, as this will help maintain the desired crunchy texture.
Salting Process
- Keep the cabbage in salt for 2-3 hours, turning it every 30 minutes to ensure uniform salting and consistent texture across all pieces.
- Use coarse sea salt in the correct proportion, approximately 15% of the cabbage weight, as this type of salt helps extract water without compromising the structure.
- Rinse three times and drain completely to remove excess salt and water, ensuring the leaves maintain their characteristic firmness.
Fermentation Process
- Keep kimchi at room temperature (20-22°C) for the first 24 hours before refrigerating, this step is crucial for initiating proper fermentation.
- Use containers that allow kimchi to stay submerged in its own liquid, preferably glass or ceramic containers for optimal fermentation.
- Gently press the kimchi to remove air bubbles, without crushing the vegetables, allowing flavors to develop while maintaining texture.
Maturation Control
- Avoid adding too much liquid to the seasoning mixture to maintain firm texture, as excess liquid can soften the vegetables.
- Allow kimchi to mature slowly in the refrigerator to maintain the crunchy texture, monitoring the fermentation process regularly.
- Check fermentation daily to adjust temperature as needed, ensuring a balance between flavor and texture throughout the process.
Attention to these details during each stage of the process will ensure kimchi with the characteristic crunchy texture that everyone seeks in this traditional Korean preparation.

Basic and Essential Ingredients for Authentic Kimchi
To prepare authentic and traditional kimchi, you'll need a specific combination of vegetables, seasonings, and fermentative elements. Each ingredient plays a fundamental role in developing the characteristic flavor, aroma, and texture.
- Napa cabbage: 1 medium head (2-3 pounds) - Main base that provides texture and absorbs flavors during fermentation.
- Coarse sea salt: 1/2 cup - Draws water out of the cabbage and creates the ideal environment for fermentation.
- Gochugaru: 1/2 cup - Korean red pepper powder that provides the characteristic red color and spiciness.
- Garlic: 8-10 cloves - Provides aromatic intensity and promotes fermentation.
- Fresh ginger: 2 inches - Adds freshness and aids in the fermentation process.
- Green onions: 6-8 stalks - Adds fresh flavor and aroma to the kimchi.
- Carrot: 1 medium - Provides natural sweetness and additional color.
- Daikon radish: 1/2 cup - Adds crunchy texture and flavor.
- Fish sauce: 3 tablespoons - Contributes umami and depth of flavor.
- Shrimp paste: 2 tablespoons - Intensifies flavor and adds complexity.
- Sugar: 1 tablespoon - Helps initiate the fermentation process.
- Cooked rice flour: 1/4 cup - Acts as a thickener and helps seasonings adhere.

How to Make Kimchi Step by Step
Making kimchi is a process that requires attention and patience to achieve the perfect balance of flavors and textures. Following these steps in detail, you'll create authentic and delicious kimchi.
Step 1: Cabbage Preparation
- Cut the napa cabbage (1 medium head) in half lengthwise, then divide each half again to get quarters, keeping the base intact so the leaves stay together.
- Remove damaged or wilted outer leaves to ensure the best quality, and thoroughly wash each section under cold running water, paying special attention to the base where dirt tends to accumulate.
Step 2: Salting Process
- Evenly sprinkle coarse sea salt (1/2 cup) between the cabbage layers, making sure it reaches the base of each leaf.
- Let it rest for 2-3 hours, turning every 30 minutes to ensure uniform salting that will draw out excess water.
Step 3: Rice Paste Preparation
- Mix rice flour (1/4 cup) with water until forming a smooth paste and cook over low heat until thickened.
- Let the paste cool completely before using, as it will serve as a base for the seasonings to adhere better.
Step 4: Complementary Vegetable Preparation
- Cut daikon radish (1/2 cup) and carrot (1 medium) into fine, uniform julienne.
- Finely chop green onions (6-8 stalks) into 1-inch lengths.
Step 5: Seasoning Paste Preparation
- Mix gochugaru (1/2 cup), minced garlic (8-10 cloves) and grated ginger (2 inches).
- Incorporate the cooled rice paste, fish sauce (3 tablespoons), shrimp paste (2 tablespoons), and sugar (1 tablespoon).
Step 6: Final Assembly
- Drain and rinse the salted cabbage three times, making sure to remove excess salt.
- Mix all prepared vegetables with the seasoning paste, ensuring each leaf is well coated.
Step 7: Initial Fermentation
- Place the kimchi in an airtight glass or ceramic container, leaving some space at the top.
- Keep at room temperature (20-22°C) for 24 hours before transferring to the refrigerator.
Step 8: Refrigeration Fermentation
- Move the kimchi to the refrigerator (2-4°C) for slow and controlled fermentation.
- Allow to mature for 5-7 days for a mild flavor, 2-3 weeks for a more complex flavor, or 1-2 months for an intensely acidic flavor.
Making kimchi is an art that improves with practice. Remember that each step is essential to achieve the perfect balance of flavors and textures that characterizes this traditional Korean dish. For lovers of more intense and complex flavors, you can extend the fermentation time beyond 2 months, as some enthusiasts enjoy aged kimchi that can develop unique and deep flavors over time.

How Long Does Kimchi Need to Ferment?
The kimchi fermentation process is a crucial element that determines its final flavor and texture. This process develops in two main stages to reach the optimal maturation point.
Initial Fermentation
- The first stage occurs at room temperature (20-22°C) during the first 24 hours, allowing the natural fermentation process to begin and initial flavors to develop.
- During this period, characteristic flavors and beneficial bacteria will begin to develop, giving kimchi its unique profile.
Refrigeration Fermentation
- After initial fermentation, kimchi should be moved to the refrigerator (2-4°C) for slow and controlled fermentation that will allow more complex flavors to develop.
- Kimchi will be ready to consume after 5-7 days in the refrigerator, when it develops a slightly acidic flavor and maintains its crunchy texture.
Maturation Times by Preference
- Fresh kimchi (1-5 days): Mild flavor and very crunchy vegetables, ideal for those who prefer subtle flavors and firmer textures.
- Mature kimchi (2-3 weeks): More acidic and complex flavor, perfect for daily consumption and as a side dish.
- Very fermented kimchi (1-2 months): Intensely acidic flavor, ideal for stews and recipes requiring more pronounced flavors.
Factors Affecting Fermentation
- Room temperature directly influences fermentation speed, being faster in warm environments and slower in cold ones.
- The amount of salt and sugar affects the fermentation process, controlling the speed and flavor development.
- The type of container and its sealing impact fermentation quality, being crucial for maintaining optimal conditions.
Fermentation will continue even in refrigeration, so the flavor will keep evolving over time. The optimal consumption point will depend on your personal flavor and acidity preferences.

Best Ways to Store and Preserve Kimchi
Proper kimchi storage is essential for maintaining its flavor, texture, and properties. Here are the best practices to preserve it correctly.
Suitable Containers
- Glass or ceramic containers with airtight seals are most recommended, as they don't react with fermentation acids.
- Leave space at the top of the container to allow for expansion during fermentation.
- Avoid metal containers as they can corrode over time due to kimchi's acidity.
Important Tips
- Keep vegetables always submerged in the liquid to prevent mold.
- Use clean utensils each time you serve to avoid contamination.
- Discard if mold appears or strange odors are detected.
Temperature and Location
- Keep kimchi refrigerated at a temperature between 2-4°C to slow down fermentation.
- Avoid sudden temperature changes that can affect the fermentation process.
- Store away from other foods due to its strong aroma, ideally in a separate compartment.
Storage Time
- Unpasteurized kimchi lasts 3 to 6 months in refrigeration if kept submerged in its liquid.
- Opened pasteurized kimchi should be consumed within 3-4 days.
- Fermentation continues even in refrigeration, so the flavor will become more acidic over time.
Well-preserved kimchi can last several months, but its flavor will evolve and become more intense over time. The optimal consumption point will depend on your personal preferences.

Perfect Side Dishes and Dishes to Serve with Kimchi
Kimchi is a versatile ingredient that can be consumed alone or as part of numerous preparations. Here are the best ways to enjoy it.
Traditional Dishes
- White rice is the quintessential classic accompaniment, especially when served with a fried egg on top and a drizzle of soy sauce that enhances all the flavors.
- Kimchi Bokkeumbap (kimchi fried rice) is a comforting and flavorful dish that uses fermented kimchi to create an explosion of flavors.
- Kimchi Jjigae (kimchi stew) is the perfect option for cold days, being an excellent way to use more mature kimchi and its intense flavors.
Modern Accompaniments
- As a side dish for grilled meats, kimchi provides a refreshing contrast and a spicy touch that perfectly complements proteins.
- In sandwiches and burgers, kimchi adds a unique dimension with its crunchy texture and characteristic fermented flavor.
- As a pizza topping, kimchi creates an interesting fusion of flavors that combines the best of Eastern and Western cuisine.
Innovative Combinations
- With cold noodles like udon or soba, kimchi creates refreshing dishes ideal for hot days, adding texture and flavor.
- In rice bowls with vegetables and proteins Buddha bowl style, adding a spicy and fermented touch to these healthy dishes.
- As filling for empanadas or dumplings, kimchi creates a unique fusion that surprises with its combination of traditional and modern flavors.
Kimchi can be consumed both cold and hot, depending on the dish in which it's used. When used as a side dish it's usually served cold, while in cooked dishes it's heated together with the other ingredients.

Frequently Asked Questions (FAQs)
Q: Is kimchi vegetarian?
A: Not all kimchi is vegetarian, as the traditional recipe includes fish sauce and fermented shrimp paste. However, vegetarian versions exist that substitute these ingredients with plant-based alternatives, maintaining the characteristic umami flavor through the use of seaweed or mushrooms.
Q: Why does my kimchi have bubbles or why is the jar swollen?
A: It's completely normal for kimchi to produce bubbles and pressure in the container due to the natural fermentation process. Beneficial bacteria produce carbon dioxide during fermentation, which causes this reaction and is a sign that the process is working correctly.
Q: How long does kimchi last?
A: Kimchi can last 3 to 6 months in refrigeration if kept submerged in its liquid and handled with clean utensils. Fermentation will continue even in the refrigerator, so the flavor will become more acidic and intense over time.
Q: Can kimchi be eaten hot or cold?
A: Kimchi is versatile and can be consumed both hot and cold. It's traditionally served cold as a side dish, but it's also excellent hot in stews, soups, or stir-fries, where its flavors intensify and complement other ingredients.