The key to making Oisobagi (Korean stuffed cucumber kimchi) that stays crisp instead of turning soft quickly is to pour hot salt brine over 10 cucumbers, let them sit for 30 minutes, and drain them thoroughly before adding the filling.
Bring 2.5 L (84.5 fl oz) of water to a boil, turn off the heat, and dissolve 1/2 Korean paper cup of sea salt in the hot water. Pouring the hot brine directly over the prepared cucumbers helps season them evenly in a relatively short time.
For the filling, combine gochugaru, anchovy fish sauce, tuna extract, maesil extract, and the remaining seasonings with garlic chives, onion, carrot, and red chili peppers. Add just a small amount of the completely cooled brine to keep the filling moist. After stuffing the cucumbers, let the Oisobagi ferment at room temperature for 24 hours, then refrigerate. The result is a spicy, refreshing cucumber kimchi with aromatic garlic chives and a crisp, juicy texture.
⏱️ Cooking Time: About 45 minutes
🍳 Difficulty: ★★☆☆☆
✓ Ingredients
🥣 Main Ingredients
- 10 cucumbers
- 1/2 bunch garlic chives, about 150 g (5.3 oz)
- 1/2 onion
- 5 red chili peppers
- 1 handful julienned carrot
🧂 Sauce & Seasonings
- 2.5 L (84.5 fl oz) water, for brining the cucumbers
- 1/2 Korean paper cup sea salt, for brining the cucumbers
- 1 Korean paper cup gochugaru (Korean red pepper flakes)
- 2 tbsp minced garlic
- 1 tbsp minced ginger
- 1 tbsp sugar
- 2 tbsp maesil extract (Korean green plum extract)
- 1 tbsp brewed soy sauce
- 3 tbsp tuna extract
- 1/3 Korean paper cup anchovy fish sauce
(Measurement guide: 1 tbsp = 15 ml (0.5 fl oz), 1 tsp = 5 ml, 1 Korean paper cup = 180 ml (6.1 fl oz))
✓ How to Make Oisobagi
- Wash the cucumbers: Wash 10 cucumbers thoroughly under running water, rubbing them gently with your hands so the skins are not damaged.
- Cut and score the cucumbers: Trim off both ends of each cucumber. Depending on their length, cut each cucumber into 3 or 4 sections. Make a cross-shaped cut down the center of each piece, leaving about 1 cm (0.4 in) intact at the bottom so the sections stay connected.
- Make the hot salt brine: Pour 2.5 L (84.5 fl oz) water into a large pot and bring it to a full boil. Turn off the heat, add 1/2 Korean paper cup sea salt, and stir until completely dissolved.
- Brine the cucumbers: Pour all of the hot salt brine directly over the prepared cucumbers, making sure they are evenly submerged. Let them brine for 30 minutes.
- Rinse and drain the cucumbers: After 30 minutes, remove the cucumbers and give them a quick, gentle rinse under cold running water. Transfer them to a colander and drain thoroughly. Set the used brine aside and let it cool completely.
- Prepare the vegetables for the filling: Cut 1/2 bunch garlic chives into 2 cm (0.8 in) pieces. Finely chop 1/2 onion and 5 red chili peppers. Julienne 1 handful of carrot into thin strips about the same length as the garlic chives.
- Make the seasoning mixture: In a large bowl, combine 1 Korean paper cup gochugaru, 2 tbsp minced garlic, 1 tbsp minced ginger, 1 tbsp sugar, 2 tbsp maesil extract, 1 tbsp brewed soy sauce, 3 tbsp tuna extract, and 1/3 Korean paper cup anchovy fish sauce. Mix well.
- Make the garlic chive filling: Add the prepared garlic chives, onion, red chili peppers, and carrot to the seasoning mixture. Add only a small amount of the completely cooled brine, then gently toss so the vegetables do not become overly wilted.
- Stuff the cucumbers: Carefully open the cross-shaped cuts in each drained cucumber and firmly pack the garlic chive filling inside. Lightly smooth some of the seasoning over the outside, then arrange the stuffed cucumbers neatly in an airtight container.
- Ferment and refrigerate: Cover the container and let the Oisobagi ferment in a shaded spot at room temperature for 24 hours. The next day, transfer it to the refrigerator and keep it chilled.
✓ Key Tips for Success
- Use hot salt brine: Brining the cucumbers in cold salt water or dry salt works more slowly, so more moisture can remain inside the cucumbers and later collect in the container. Pouring hot salt brine over the cucumbers and letting them sit for 30 minutes helps firm the outer texture and keeps them crisp for longer.
- Cool the brine completely before adding it to the filling: A small amount of the brining liquid is added to adjust the moisture and seasoning of the garlic chive filling. If the brine is still hot, it can partially cook the garlic chives and vegetables, affecting their texture and fresh flavor. Let the brine cool completely before adding a little at a time.
✓ Serving Tips
- Serve Oisobagi with freshly cooked white rice, savory nurungji (Korean scorched rice), ramen, or jjajang ramen. Its cool, crisp texture and spicy seasoning pair especially well with hot or mild dishes.
- After fermenting at room temperature for 24 hours, refrigerate and serve chilled. The cool cucumber juices, gentle tang, and spicy garlic chive filling become more noticeable after chilling.
✓ How to Choose Good Cucumbers
- Shape and thickness: Choose cucumbers that are straight and evenly thick from the stem end to the tip. They should feel firm rather than soft when gently pressed.
- Surface and bumps: Look for cucumbers with pronounced bumps and small spines that still feel slightly prickly to the touch.
- Color and stem: Choose cucumbers with a vivid green color and a fresh-looking stem end that is not dried out.
✓ Cucumber Nutrition per 100 g (3.5 oz)
| Nutrient | Amount per 100 g (3.5 oz) |
|---|---|
| Calories | 13.00 kcal |
| Carbohydrates | 2.79 g |
| Protein | 1.06 g |
| Fat | 0.05 g |
| Sodium | 3.00 mg |
Based on 100 g (3.5 oz) of raw Dadagi cucumber. Actual nutrition values may vary depending on the variety, part used, product, and preparation method.
Source: Ministry of Food and Drug Safety Food Nutrition Database – Raw Food Ingredients
✓ Frequently Asked Questions (FAQ)
Q1. Why do you pour hot salt brine directly over the cucumbers?
The hot brine helps the outer cucumber tissue firm up quickly while drawing out moisture. This helps the cucumbers maintain a crisp, crunchy texture instead of becoming soft too soon.
Q2. Why does Oisobagi sometimes release a lot of liquid and taste less seasoned during storage?
This can happen when the cucumbers have not released enough moisture during brining or when warm brine is added to the filling before it has completely cooled, causing the vegetables to soften.
Q3. Should I scrub the cucumbers with coarse salt or a scouring pad?
It is better to avoid them for this recipe. Scrubbing too firmly can damage the thin cucumber skin, so gently rub the cucumbers with your hands under running water instead.
Brining the cucumbers in hot salt water for 30 minutes helped them stay noticeably crisp even after sitting for a while. The seasoning made with garlic chives, onion, carrot, gochugaru, and fish sauce paired well with the cool, juicy cucumber, creating a spicy yet refreshing flavor.
My family especially liked the Oisobagi after it had fermented for a day and was served chilled. The sharp aroma of the garlic chives and the crunchy cucumber made it a natural match for warm rice, while its refreshing flavor also worked well alongside hot dishes such as ramen or nurungji.
If your homemade Oisobagi tends to soften quickly or release too much liquid, try brining the cucumbers in hot salt water for 30 minutes and cooling the reserved brine completely before adding only as much as needed to the filling. This method helps preserve the crisp cucumber texture while keeping the kimchi spicy and refreshing.
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※ This recipe was adapted from a recipe featured on the YouTube channel “요리왕비룡 셰프TV.” I prepared the dish myself and wrote this post based on the cooking process and results.