Soy Pickled Perilla Leaves (Kkaennip Jangajji) Recipe

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My grandmother always kept a dedicated glass container of kkaennip jangajji (soy pickled perilla leaves) sitting in the cool shade of her pantry, and later in the back of her refrigerator. On hot Seoul summer days when the humidity made everyone lose their appetite, she would bring out that cold tub. She would place a single dark, glistening leaf over a spoonful of piping-hot white rice, wrap it gently using the tips of her chopsticks, and hand it over. That single bite—salty, herbal, sharp with garlic, and slightly sweet—was always enough to wake up your palate. In Korea, we call dishes like this bap doduk, which translates literally to ‘rice thief,’ because you will easily finish two bowls of rice without even realizing it.

Jangajji refers to a traditional category of Korean banchan (side dishes) where fresh vegetables are preserved in soy sauce, vinegar, or fermented pastes. While cucumber, garlic scapes, and radishes are common pickling candidates, perilla leaves hold a special place in Korean home cooking. Perilla leaves have a distinct aroma that combines notes of mint, anise, and a rich, earthy nuttiness. Pickling them in a seasoned soy brine tempers their natural bitterness while locking in that incredible herbal fragrance for months on end.

If you live outside Korea, you might wonder if pickling perilla leaves at home requires special equipment or hard-to-find ingredients. The great news is that the pickling liquid uses pantry staples you can grab at any standard Western supermarket, with perilla leaves being the only item you will need to pick up at an Asian market or grow in your garden. This recipe reproduces the exact home-style flavor my family has enjoyed for generations, engineered to be foolproof even if this is your very first time making Korean pickles.

Why This Works

• Warm brine Wilting Technique: Pouring the cooked brine while it is warm—rather than boiling hot or completely cold—softens the tough outer fibers of the perilla leaves just enough to let the marinade penetrate quickly without cooking the leaves into mush.
• Aromatic Layering: Interleaving raw sliced garlic, fresh chilies, and onions directly between small bundles of leaves allows the aromatic oils to infuse slowly into the liquid as it rests, creating depth rather than harsh raw sharpness.
• Osmotic Balance: A precisely measured ratio of soy sauce, water, acidity, and natural sweetener draws out moisture from the leaves gradually, preventing the pickles from becoming overly salty or shriveled over long storage.

Ingredients

• 100 fresh perilla leaves (approx. 150 g / 5.3 oz)
• 240 ml (1 cup) Korean soy sauce (jin ganjang, or standard all-purpose soy sauce)
• 240 ml (1 cup) water
• 120 ml (1/2 cup) rice vinegar (or mild apple cider vinegar)
• 100 g (1/2 cup) granulated sugar (or 120 ml / 1/2 cup Korean plum syrup, maesil-cheong)
• 60 ml (1/4 cup) mirin (sweet cooking wine)
• 1 small yellow onion (approx. 100 g / 3.5 oz), sliced paper-thin
• 6 cloves garlic, sliced thinly into coins
• 2 fresh Korean green or red chili peppers (or jalapeno/serrano peppers), thinly sliced into rings
• 1 piece dried kelp / dashima (approx. 5×5 cm / 2×2 inches)

Substitutions

If perilla leaves (kkaennip) are difficult to source in your area, you can substitute Japanese green shiso leaves (aojiso), which belong to the exact same botanical family. Shiso leaves are slightly smaller and carry a slightly brighter citrus note, but they pickle beautifully in this exact same brine. If neither is available, fresh grape leaves can work for texture, though they lack perilla’s iconic mint-anise aroma.

For the soy sauce, stick to Korean jin ganjang (such as Sempio brand) or regular Japanese soy sauce like Kikkoman. Avoid dark sweet soy sauce or light tamari with strong flavor additives. If you cannot find Korean plum syrup (maesil-cheong), simply use sugar as listed in the main ingredient list; adding a splash of fresh lemon juice along with the vinegar will imitate the subtle fruity acidity of plum syrup.

How to Make It

1. Wash and dry every leaf individually: Perilla leaves have microscopic fuzzy hairs on both sides that easily trap dust and soil. Submerge the leaves in a large bowl of cold water, swishing them gently. Rinse each leaf under cold running water. Afterwards, pat every leaf completely dry using clean kitchen towels or paper towels. Why: Any residual water left on the leaves will dilute your pickling liquid, lowering the salinity and acidity, which can cause the pickles to spoil or go moldy prematurely in the fridge.
2. Trim the stems cleanly: Trim the end of each stem, leaving roughly 1 to 1.5 cm (about 1/2 inch) attached to the leaf. Why: Leaving a short stem makes it vastly easier to pick up an individual leaf with chopsticks later at the dinner table, while removing the fibrous lower stem ensures you don’t bite into tough, woody bits.
3. Build the marinade brine: In a small saucepan, combine 240 ml (1 cup) soy sauce, 240 ml (1 cup) water, 120 ml (1/2 cup) rice vinegar, 100 g (1/2 cup) sugar, 60 ml (1/4 cup) mirin, and the piece of dried kelp (dashima). Set over medium-high heat. Stir occasionally until the sugar dissolves completely. Bring to a gentle boil, then turn the heat down to low and simmer for 3 to 4 minutes. Remove from heat and discard the kelp piece. Why: Boiling the brine dissolves the sugar smoothly, burns off raw alcohol from the mirin, and extracts rich umami glutamates from the kelp. Simmering also sterilizes the liquid for long shelf life.
4. Stack leaves with aromatics: While the brine is simmering, layer the perilla leaves in a wide, flat-bottomed glass container or food-safe storage tub. Layer 5 to 10 leaves facing down, scatter a few slices of garlic, chili, and onion over them, and repeat the process until all leaves and aromatics are neatly stacked in overlapping bundles. Why: Layering aromatics throughout the stack ensures that garlic and chili oils infuse evenly into every leaf layer rather than floating uselessly at the very top of the jar.
5. Pour warm brine over the leaves: Let the hot brine rest on the counter for about 5 minutes so it cools slightly to around 70°C–80°C (160°F–175°F). Pour the warm brine evenly over the stacked perilla leaves and sliced aromatics. Why: If the liquid is boiling hot, it will scald the delicate leaves, causing them to turn mushy and lose their vibrant aroma. If the liquid is completely ice-cold, it will take weeks for the pickling solution to penetrate the thick cell walls of the leaves. Warm liquid hits the sweet spot.
6. Apply a weight and cool completely: Place a small food-safe weight, a small ceramic dish, or a clean glass lid directly on top of the leaves to push them below the surface of the brine. Leave the container uncovered on the counter until it reaches room temperature, about 45 to 60 minutes. Why: Perilla leaves naturally float. Keeping them weighed down ensures every leaf stays submerged so it pickles evenly. Leaving it uncovered while cooling prevents condensation from forming under the lid, which would drip unsterilized water back into your pickles.
7. Seal and mature in the fridge: Seal the container tight with its lid and place it in the refrigerator. Let it pickle for at least 24 to 48 hours before eating. Why: While you can technically eat them after a few hours, waiting two full days allows the leaf fibers to soften into a silky texture and fully absorb the soy-garlic seasoning.

Tips from a Korean Kitchen

In Korean homes, preserving pickles is almost an art form passed down through observation. Here are a few practical kitchen secrets to ensure your kkaennip jangajji turns out flawless every single batch:

• The Re-boiling Method for Months of Storage: If you make a huge batch that you intend to keep for up to six months, perform this classic Korean grandmother trick. After 3 days of pickling in the fridge, pour all the liquid out of the jar into a saucepan, leaving the leaves and aromatics behind. Bring the liquid to a full boil for 2 minutes, let it cool completely to room temperature, and pour it back over the leaves. This cooks off the excess moisture pulled out from the leaves through osmosis and re-sterilizes the brine, letting it stay pristine indefinitely in your fridge.
• Choose Wide, Flat Storage Containers: Avoid narrow, tall mason jars when making perilla leaf pickles. Because you want to peel leaves off one by one with chopsticks, stacking leaves flat in a wide rectangular container prevents them from folding, creasing, or sticking together into a ball.
• Align the Stems: When layering the leaves into your container, stack them with all stems pointing toward the outer edges. When serving, you can easily grasp a single stem with your chopsticks and lift a leaf smoothly off the pile without disturbing the rest of the stack.
• Adjusting Heat Levels: Fresh Korean green chilies (cheongyang peppers) carry a fiery punch that contrasts wonderfully with the deep, savory soy marinade. If you prefer a milder side dish, replace them with sweet mini bell peppers or remove the seeds from your jalapenos before slicing.

Storage

Refrigerator: Store your kkaennip jangajji in an airtight glass or food-grade plastic container in the coldest part of your refrigerator. Always ensure the leaves remain submerged under the pickling liquid. Properly stored, these pickled leaves will keep exceptionally well for 2 to 3 months (or up to 6 months if you perform the re-boiling step mentioned above).

Freezer: Do not freeze this dish. Freezing destroys the delicate cell structure of pickled greens, turning the leaves into a dark, watery mush upon thawing.

Reheating and Serving: Never heat kkaennip jangajji! It is meant to be eaten cold or at room temperature straight out of the fridge. High heat destroys the fresh, volatile essential oils that give perilla leaves their unique herbal perfume.

FAQ

Can I use Japanese shiso instead of Korean perilla leaves?

Yes, absolutely. Japanese green shiso (aojiso) belongs to the same plant species family as Korean perilla (kkaennip). Shiso leaves are slightly thinner and have a slightly more intense citrus mint aroma, but they turn out deliciously when pickled in this exact soy sauce marinade.

Why did my perilla leaves turn dark olive green?

Do not worry—this is completely normal! As perilla leaves soak in soy sauce and acid over time, chlorophyll breaks down and the leaves absorb the dark pigments of the soy sauce. They will transform from bright green to a dark, glossy olive-brown color. As long as the leaves remain firm and smell fresh, savory, and aromatic, they are perfectly safe and delicious to eat.

How do you eat kkaennip jangajji at the table?

The standard Korean way to enjoy kkaennip jangajji is as a simple banchan alongside fresh hot rice. Grab one leaf by its stem using your chopsticks, lay it flat over a spoonful of steamed rice, pull the edges of the leaf around the rice, and eat it in a single bite. It is also an absolute sensation when wrapped around freshly grilled pork belly (samgyeopsal) or grilled beef, as the bright pickled acidity cuts through rich meats beautifully.

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