Korean Soy-Pickled Jalapeños (Gochu Jangajji)

Name: Korean Soy-Pickled Jalapeños (Gochu Jangajji)
Prep time: 20 min
Cook time: 8 min
Total time: 28 min
Yield: 16 servings
Cuisine: Korean
Ingredients: 1 pound (450 g) fresh jalapeños, firm and glossy, washed and dried, stems trimmed to ¼ inch, sliced into ½-inch (1 cm) rounds (seeds left in); 5 cloves (25 g) garlic cloves, peeled and thinly sliced; 1 cup (240 ml) soy sauce; 1 cup (240 ml) water; 1 cup (240 ml) distilled white vinegar; ½ cup (100 g) granulated sugar; 1 piece (3 inches) (5 g) dried kelp (dasima), wiped with a damp cloth, not rinsed (optional)

From the MyKitchenBank Kitchen

Crisp jalapeños steeped in a hot, salty-sweet-tangy soy brine until they turn savory and glossy. Serve them with rice, noodles, grilled meats or sandwiches. They're ready in 3 days and keep for months.

Prep: 20 min
Cook: 8 min
Wait: 3 days
Total: 3 days
Makes: About 1 quart (1 liter) pickles, 16 servings of ~¼ cup

Jump to recipe ♡ Save

Steps

Before you start

Plan ahead: the pickles need 3 days in the fridge before they taste their best.
Wash a 1-quart (1 liter) glass jar and lid in hot soapy water, rinse well and let dry.
Wear thin gloves when slicing jalapeños, or wash your hands well with soap afterward and avoid touching your eyes.
Use a regular (all-purpose) Korean or Japanese soy sauce, not dark or low-sodium, so the brine is balanced.

1
Prepare the jalapeños
- Wearing gloves, wash and thoroughly dry the jalapeños.
- Trim the stems to ¼ inch (6 mm), then slice into ½-inch (1 cm) rounds, keeping the seeds for heat.
- Peel and thinly slice the garlic.
+ Show details− Hide details
Ready when: Slices are even in thickness and surfaces are dry to the touch.
Tip: Water on the chilies dilutes the brine, so dry them well.
2
Pack the jar
- Layer the sliced jalapeños and garlic in the clean 1-quart jar, pressing down gently.
- Leave about 1 inch (2.5 cm) of space at the top.
+ Show details− Hide details
Ready when: Chilies are snug but not crushed, with 1 inch of headspace.
Tip: Don't overpack, or the brine can't reach every slice.
3
Simmer the brine
- In the saucepan, combine the soy sauce, water, vinegar, sugar and kelp, if using.
- Bring to a boil over medium-high heat, stirring once or twice to dissolve the sugar.
- Boil for 3 minutes, then remove the kelp so it doesn't turn slimy.
+ Show details− Hide details
Ready when: Brine is at a steady rolling boil and the sugar is fully dissolved, with no grains at the bottom.
Tip: Stand back when pouring in the vinegar; the fumes are sharp.
4
Pour hot brine
- Carefully pour the hot brine over the jalapeños until they are fully covered, using a ladle or heatproof measuring cup.
- Press a small ramekin or fermentation weight on top to keep them submerged.
+ Show details− Hide details
Ready when: All chilies sit below the liquid line and the brine reaches about ½ inch from the rim.
Tip: Use a jar rated for heat, or warm it with hot tap water first, to avoid cracking.
5
Cool to room temperature
- Leave the jar uncovered on the counter until the brine is completely cool.
- The chilies will darken from bright green to olive as they cool.
- Remove the weight, then seal the lid.
+ Show details− Hide details
Ready when: Jar feels neutral to the touch, not warm.
Tip: Sealing a hot jar traps steam and can soften the chilies.
6
Refrigerate and cure
- Refrigerate the sealed jar for 3 days before eating.
- Turn the jar upside down once a day to redistribute the brine.
+ Show details− Hide details
Ready when: Chilies are olive-colored, still crisp when bitten, and taste savory, sweet and tangy.
Tip: Eat them earlier for a crunchier, spicier bite, or wait a week for a mellower flavor.
7
Serve
- Lift out the chilies with clean tongs and chop or serve whole alongside rice, noodles, grilled meats, sandwiches or tacos.
- Always use a clean utensil, and keep the remaining chilies submerged in the brine.
+ Show details− Hide details
Tip: The leftover brine is great drizzled over rice or used in marinades and dipping sauces.

Good to know

Tips

Keep the seeds in for heat; remove them from half the chilies for a milder batch.
Boil the brine and pour it hot over raw chilies; this keeps them crisp while helping flavors penetrate.
Reuse the brine once: reboil it for 3 minutes, cool it, and pour it over a fresh batch of chilies, adding 2 tablespoons of vinegar.
Keep everything submerged in the brine and use clean utensils to prevent spoilage.

Make ahead

"Make up to 3 days ahead for full flavor; the pickles improve for the first week and are best within 2 months."

Storage & reheating

"Refrigerate in the sealed jar, with the chilies submerged, for up to 3 months. Texture softens over time. Not suitable for room-temperature storage. Freezing is not recommended because the chilies turn soft. Serve cold straight from the jar; no reheating needed."

Substitutions

fresh jalapeños → Korean green chilies (cheongyang or oi-gochu) or serrano peppers. Whole Korean chilies should be pierced with a fork. Serranos are hotter; cheongyang is spicier, while oi-gochu is milder.
distilled white vinegar → apple cider vinegar or rice vinegar. Both give a softer, rounder tang; use the same amount.
granulated sugar → light brown sugar or Korean plum syrup (maesil-cheong), same amount. Brown sugar gives a deeper flavor; plum syrup adds fruity sweetness.
soy sauce → tamari. Use for a gluten-free version; the flavor is slightly richer.