Beginner's Guide To Making Kimchi
By Alex C
Senior Food Writer at Pro Home Cooks
When someone says kimchi, you automatically think of bright red, sour and spicy napa cabbage but in actuality you can really “kimchi” anything. In fact, there are over 200 different kinds of kimchi in Korea and limitless ways of making them unique to your taste buds. Instead of thinking of kimchi as a side dish you eat at your favorite Korean restaurant, think of kimchi as a verb. It’s really a process of preserving vegetables by fermenting them in a very flavorful sauce. Before modern refrigeration became a thing, the fermentation method of choice for Koreans was the act of making kimchi because it was a way to preserve vegetables for long periods of time thus ensuring a stable food supply throughout the winter. Centuries later, making kimchi is now rooted in Korean culture. It’s even a way of showing love and passing down a Korean family's heritage. You won't see a Korean kitchen without a jar of kimchi and now since it became popular in recent years, you’ll even start to see jars of kimchi in non-korean kitchens such as mine!
There are numerous types of kimchi, ranging from classic napa cabbage kimchi to green onion kimchi. They can be bright almost neon red in color or as white as snow. They can be sour/tangy, sweet, spicy, a little fizzy from the fermentation but they are always a total bomb of umami deliciousness. These variations of kimchi allow for people to enjoy different tastes and textures throughout the year and because kimchi is a fermented product it is constantly changing. From the moment you make it to the last bite of the batch, the flavor and texture will develop over time. A fresh batch of kimchi will be better suited as a side with rice and pork while an older batch of kimchi will be much more suited for a bubbling cauldron of kimchi jjigae (a spicy kimchi soup).It is such a dynamic dish that changes over time but what does not change throughout the fermentation process is the bountiful health benefits kimchi has. It is naturally rich in vitamins, fiber, and probiotics and really great for your gut health.
Despite the many different kinds of kimchi you can make there are still three main parts of the process that all kimchi can be broken down into: prepping, saucing, and fermenting. The main vegetable, which can be but is not limited to napa cabbage, radish, scallion, cucumbers, or chives, is rinsed of any dirt or debris. Next, comes brining. Not all kimchi will need to be brined. Scallion, chive, and dandelion kimchi are all types that don't need to be brine. (You can brine them but it isn't necessary.) However, for cabbage kimchi and radish kimchi they need to be brined to help draw out as much water as possible. By heavily salting it, the moisture will come out so you aren't left with a watered down kimchi. The second reason you’d brine your veggies is that it will soften the veggies, making the more delicate vegetables (like cabbage) less prone to breakage. Brining the veggies will take anywhere from 30 minutes to 2 hours depending on how large the vegetable is. For example, cubed radish will only take 30-40 minutes where a whole head of cabbage will take 2 hours.
While the vegetables are brining, it is a good time to start step 2 of the kimchi making process: saucing. In this blog post I will only be talking about the typical red kimchi paste. (However, there are different kinds.) There are two key elements to the paste: chopped veggies and the sauce itself. The actual sauce can be as simple as mixing gochugaru flakes, fish sauce, and honey to something even more complex by adding onions, garlic, ginger, sugar, and fermented shrimps. But just know that the base of the seasoning paste is what gives the kimchi its flavor. The veggies will ferment in this delicious potent paste and it is one part of what makes the kimchi flavor so complex.
My personal sauce mixture is a puree of onion, garlic, ginger, and a fruit such as an apple or asian pear mixed with fish sauce and gochugaru flakes. I find that this is the perfect base for me and my family but you can totally customize it to how you like it. For example, some people omit the fish sauce to make it vegan. You substitute equal parts of soy sauce and miso paste for the fish sauce. Some like to add in salted fermented shrimp or shrimp paste for an extra umami layer. I love the entire fruit but some just add fruit juice or fruit extract. Fermented plum juice is a popular choice if you can find it in stores!
Once the sauce has been made, you can move on to your chopped veggies. For the chopped veggies, you can totally omit them entirely but I love adding chives, carrots, and or scallions. These are the classic three in my book. They add an extra layer of flavor and crunch and I love finding a little radish or scallion in the mix. However, I’ve also heard of other people adding pine nuts, perilla leaves, and bean sprouts. The chopped veggies are totally optional but I never make a batch of kimchi without adding extra veggies. Add any chopped veggies you want to the sauce and mix until everything is combined. This is the final seasoning paste.
Depending on your preference, you can make a rice paste. It is not part of the kimchi sauce and some people completely omit it. It’s simply sweet rice flour cooked in water until you have a slightly gloopy mixture that coats the back of a spoon but is still pourable. The rice paste is combined with the seasoning paste to help coat and bind the seasoning to the veggies. It helps the sauce adhere to the veggies. I find it helps when making a traditional batch of napa cabbage kimchi.
One might think that the rice paste is the driving force fermenting the veggies but this isn't true. The rice flour doesn't directly contribute to the fermentation because the kimchi will only be fermenting for three to four days which does not give the rice enough time to ferment. However, it does indirectly support the fermentation process by enhancing the flavor profile of the kimchi by ensuring that every nook and cranny of that veggie is well and evenly coated in spices and seasonings.
After the veggies are completely and evenly coated by the paste, it is ready to begin the final step of the process: fermentation. Place the kimchi into a clean and dry fermenting vessel. This can be a traditional onggi, an airtight plastic container, or a glass jar. Really any vessel that limits the exposure to oxygen is what you're looking for. When packing the veggies, make sure to get as much air out as you can so no bacteria can grow. You can top with a few fermentation weights if you have any and then seal the jar with its lid.
Depending on the vessel you are using, you will open the jar/container to allow the gas to release, push the veggies down a bit with clean hands or clean utensils to make sure everything is covered in its own brine and check for any signs of mold forming. If you are using an onggi, you don't need to release any gas but it is a good habit to check the water line and any signs of mold forming. During fermentation, the flavors develop, and the vegetables soften while retaining their crisp texture. After 3 days, the kimchi should be perfectly fermented, so give it a taste and it should be ready to be stored in the fridge. If you want a kimchi with more sour punch, you can leave it to ferment longer. The max amount I would recommend would be 5-7 days depending on the kimchi you are making.
Properly fermented kimchi, will be spicy (anywhere from mild to hot), umami packed, slightly sweet, and tangy/sour due to it being fermented. You can eat kimchi the day it's made but to really enjoy its enhanced flavors you have to let it ferment in its own brine. However, a fun fact about kimchi is that it doesn't need to be fermented. Some kimchi is made and eaten on the same day. One example of this is stuffed cucumber kimchi (recipe below). You can ferment it if you'd like but stuffed cucumber kimchi is one that is delicious the day of because of the crispy fresh cucumber. Another example of kimchi being eaten on the same day it is made is a fresh batch of napa cabbage kimchi! When people are making large batches of cabbage kimchi, a nice treat to have for dinner is boiled pork belly with fresh kimchi!. It wont be tangy since its not fermented but it will still be delicious!
Making kimchi can sometimes be labeled as an arduous process but in reality once you understand the process its pretty easy and for the outcome to be delicious homemade custom tailored kimchi, I recommend everyone should make at least one batch of kimchi!
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