Kongnip-jangajji (콩잎장아찌, Doenjang-Cured Bean Leaves)

Ingredients

Equipment Needed

• •Heatproof nonreactive bowl or small crock for brining
• •1-quart glass jar or small onggi with lid
• •Small plate or fermentation weight
• •Clean towel for drying leaves
• •Long chopsticks or small offset spatula for layering paste

Instructions

1. 1

   Choose and stack

   Choose soybean leaves that are yellow-green or just beginning to yellow, still supple, not brown, dry, or torn. Use only leaves from unsprayed edible soybean plants. Wash them in two changes of cold water, rubbing gently around the veins where dust hides. Trim the stems to 1/2 inch, then stack the leaves in bundles of 10 with the stem ends lined up. Even stacks cure evenly; a tangled pile cures on the outside and stays raw in the middle.

   Ask for kongnip, soybean leaves, not kkaennip, perilla leaves. They are both used for jangajji, but they are different leaves and they eat differently.
2. 2

   Salt with brine

   Bring the 6 cups water and 135g coarse sea salt to a full boil, stirring until the salt dissolves. Put the leaf bundles in a heatproof nonreactive bowl or crock and pour the hot brine over them. Press them down at once with a small plate and a clean weight so every leaf stays under the brine. Let the bowl cool for 30 minutes, then cover and refrigerate for 3 days, turning the stack once each day. The hot brine wilts the leaves, and the salt pulls out the raw grassy edge so the doenjang can season instead of fight.

   Do not pour boiling brine into a cold glass jar. Brine in a bowl first, then move the leaves to a jar for the doenjang cure.
3. 3

   Rinse and dry

   Lift the leaves from the brine and rinse them quickly under cold water. Soak them in fresh cold water for 30 minutes, then taste one leaf from the center of the stack. It should be salty but edible with rice. If it bites like seawater, soak 20 minutes more. Drain, squeeze the bundles gently between your palms, and spread them on a clean towel for 20 minutes. Do not skip the drying. Wet leaves make the paste slide off and dilute the cure.

4. 4

   Mix doenjang paste

   Stir together the doenjang, soy sauce, rice syrup or maesil-cheong, gochugaru if using, garlic, and ginger. The paste should spread like thick peanut butter, not pour like sauce. If your doenjang is very stiff, loosen it with 1 tablespoon soju or boiled and cooled water, then add the second tablespoon only if it still tears the leaves as you spread it. Taste it. It should be salty first, then fermented and lightly sweet, with garlic in the back row.

   Doenjang varies wildly. If yours is very salty and dark, use only 1 tablespoon soy sauce and add 1 tablespoon more rice syrup or cooled water to keep the paste spreadable.
5. 5

   Layer the leaves

   Spread 1 tablespoon of doenjang paste on the bottom of a 1-quart jar, small onggi, or lidded glass container. Lay down 5 leaves, stems all facing the same direction, then spread 1 level tablespoon paste over the top, pushing a little more toward the thick stem ends. Repeat with the remaining leaves and paste, finishing with a full layer of paste on top. You do not need to paint both sides of every leaf; the salt has already opened the leaf, and the weight will move the paste through the stack.

6. 6

   Weight and cure

   Press a small plate, fermentation weight, or clean zip-top bag filled with brine over the stack so the leaves are firmly compressed. Cover the container and refrigerate at least 7 days, 14 days if you can wait. Every 2 days during the first week, open the container with clean hands or clean chopsticks, press the stack down, and spoon any loose paste back over the top. This is the whole discipline of the dish: doenjang must touch the middle leaves, not just the pretty outside ones.

7. 7

   Dress to serve

   Take out only what the table will eat, usually 8 to 10 leaves for a small meal. Scrape heavy paste back into the jar, then fold or cut the leaves into two-bite pieces. Dress that serving only with 1/2 teaspoon toasted sesame oil, a pinch of sesame seeds, and thin green chili if you like. Eat one leaf wrapped around a spoonful of rice. It should be salty, deep, and a little bitter, enough to season the rice without burying it.

8. 8

   Store cleanly

   Keep the remaining leaves pressed under the doenjang paste in the refrigerator for up to 2 months. Use clean chopsticks every time. Do not return dressed leaves to the jar, because sesame oil and table crumbs shorten the life of the preserve. Discard the batch if you see fuzzy mold, sliminess, or a harsh rotten smell. This is a refrigerator jangajji, not a shelf-stable canned pickle.

Chef Tips

• •Cook the month you're standing in. For this dish, the right month is late summer into early autumn, when soybean leaves have begun to yellow but have not dried. In spring, make another jangajji and wait for the bean field to catch up.
• •If a Korean market sells salted or frozen sakhin kongnip, salt-cured soybean leaves, you may use them. Soak 20 to 40 minutes, taste for salt, dry very well, and begin with the doenjang paste. That is a safe shortcut. Skipping the drying is not.
• •Doenjang is not one fixed salt level. A factory paste, a market paste, and a home crock all season differently. Measure the paste, taste it, and adjust the soy sauce by the spoonful, because the leaves are already salted before the paste touches them.
• •Keep sesame oil out of the storage jar. It belongs on the serving plate, where it smells fresh. In the jar it turns tired before the leaves are finished.
• •A glass container and refrigerator are honest modern tools here. What you cannot modernize away is the weight. Without pressure, the paste sits politely on top and the center leaves learn nothing.

Advance Preparation

• •This dish is built ahead by design: 3 days in salt brine, then at least 7 days under doenjang paste. It tastes deeper after 14 days.
• •Once the jar is cured, move 8 to 10 leaves at a time into a small serving container for the week. Keep the main jar untouched except with clean utensils.
• •The doenjang paste can be mixed 1 day ahead and refrigerated. Bring it to cool room temperature before spreading so it does not tear the leaves.

Frequently Asked Questions

Nutrition Information

1 serving (about 40g)