Oi Naengguk (Chilled Cucumber Soup)

Oi Naengguk

It’s been way too hot for the last few days with daily highs over 100° F. This chilled soup is a perfect dish to cool off from the heat. Oi naengguk is a very popular summer dish in Korea. Oi means cucumber, and naengguk means chilled soup. It’s quick, cool and refreshing! A popular variation is made with miyeok (seaweed), which is what I made here. Simply use more cucumbers if you are not adding seaweed. Make ahead of time and chill well before serving.

4 servings
1 Korean cucumber or 2 Kirby (pickling) cucumbers (5 – 6 ounces)
1 cup soaked miyeok (seaweed) – about 1/2 ounce dried
1 Korean green or red chili pepper or scallion (optional)
1 tablespoon soup soy sauce
1 teaspoon Korean red chili pepper flakes
1 teaspoon sugar
1 teaspoon sesame oil
1 teaspoon sesame seeds

For the soup:
4 cups of water
1 tablespoon soup soy sauce
3 tablespoons vinegar
salt to taste

Cut the cucumber into match sticks (julienne). Finely chop the optional chili pepper or scallion.



Prepare the dried seaweed by soaking and rinsing well. (See my miyeok guk recipe for more.) Boil water in a small pot and add 1 teaspoon of salt. Cook the soaked seaweed briefly (blanch), about 1 minute. Drain and rinse with cold water. Drain again, squeeze out excess water and cut into bite size pieces.

In a medium size bowl, gently toss the vegetables with the next 5 ingredients. Refrigerate to chill.



In another medium size bowl, mix 4 cups of water with the soup soy sauce, vinegar, and salt. Start with a half teaspoon of salt, taste and add more if necessary. Refrigerate to chill.


When ready to serve, combine the cucumber and miyeok mix with the soup. Stir the soup, taste and adjust the seasoning with salt to taste, if necessary. Serve in chilled bowls with a couple of ice cubes.

Leave a Comment



  1. Kazia Jankowski says

    Soup is my favorite, but like you said it’s been too hot so I haven’t been able to eat it. Thank you for changing that with this recipe!

  2. Thank you Kazia! Hope you beat the heat with this soup.

  3. This cool soup would be perfect on a hot summer day!

  4. Thanks, Kevin!

  5. 레시피는 참 간단하고 쉬운데 왜 저는 할때마다 엄마가 만드시는 오이냉국 맛이 안날까요? ^^ 손끝에서 나오는 정성이 아직도 한참 부족한가 봅니다! 레시피 잘보고갑니다~

  6. Anonymous says

    Это прекраснейший суп из огурцов. Русская окрошка также помогает утолить жажду в жаркую погоду. Обожаю корейскую кухню и считаю ее самой сбалансированной мире.