KOREAN HOME COOKING

Memil Guksu (메밀국수): Spicy Cold Buckwheat Noodles

매콤 냉메밀면 · Maekom Naeng-memilmyeon

Cold buckwheat noodles meet a citrusy Cheongyang chile relish, tsuyu broth, grated radish, and seaweed for a vivid Korean summer bowl.

Total time25 minYield1 servingsDifficultyEasy

Editorial guidance updated September 16, 2026 · Not a claim of kitchen testing

Korean spicy cold buckwheat noodles with green chile yuja relish, grated radish, and seaweed매콤 냉메밀면 · Maekom Naeng-memilmyeon

QUICK ANSWER

What to know before you cook

Cold buckwheat noodles meet a citrusy Cheongyang chile relish, tsuyu broth, grated radish, and seaweed for a vivid Korean summer bowl.

Memil Guksu (메밀국수) takes about 25 minutes and makes 1 servings. It is rated easy and the finished dish is hot. Use 1–2 jalapeños for mild heat, 2–3 serranos for medium, or all 6 Cheongyang chiles for the original intensity.

The key cooking cue: Place noodles in a chilled bowl, pour over the broth, and top with chile-yuja relish, grated radish, and shredded unseasoned seaweed.

WHY THIS DISH MATTERS

A little cultural context

Cold noodle dishes are essential Korean summer food. This modern bowl layers Japanese-style tsuyu with Korean yuja-cheong and Cheongyang chile for a distinctly Korean sweet-hot finish.

INGREDIENTS

What you'll need

Both systems are shown so you can cook without converting.

IngredientUSMetric
Dried buckwheat noodles3 1/2 oz100 g
Cheongyang chiles645 g
Yuja marmalade2 heaping tbsp45 g
Fine saltFor the chile relish; use less for table salt1 tbsp15 g
Tsuyu concentratescant 1/2 cup100 ml
Cold waterscant 1/2 cup100 ml
Reserved noodle waterscant 1/2 cup100 ml
Rice vinegar1 tbsp15 ml
Prepared mustard1 tsp5 g
Grated radish1/3 cup60 g

COOKING WEBTOON

Cook it panel by panel

A quick visual memory guide for the whole recipe.

4 cute steps
  1. Make the chile-yuja relish. Cute sequential cooking webtoon for Memil Guksu (메밀국수): Spicy Cold Buckwheat Noodles
    1

    Make the chile-yuja relish

    at least 20 minutes

    Finely chop the chiles and mix with the yuja marmalade and salt. Rest overnight for the roundest flavor, or at least 20 minutes.

  2. Cook the noodles. Cute sequential cooking webtoon for Memil Guksu (메밀국수): Spicy Cold Buckwheat Noodles
    2

    Cook the noodles

    about 5 minutes

    Boil the noodles in salted water according to the package, about 5 minutes. Reserve 100 ml noodle water, then rinse the noodles thoroughly under cold water.

  3. Mix the cold broth. Cute sequential cooking webtoon for Memil Guksu (메밀국수): Spicy Cold Buckwheat Noodles
    3

    Mix the cold broth

    Combine tsuyu, cold water, cooled noodle water, vinegar, and mustard. Chill well and taste; dilute if your tsuyu is highly concentrated.

  4. Assemble. Cute sequential cooking webtoon for Memil Guksu (메밀국수): Spicy Cold Buckwheat Noodles
    4

    Assemble

    Place noodles in a chilled bowl, pour over the broth, and top with chile-yuja relish, grated radish, and shredded unseasoned seaweed.

AI-assisted illustration. Follow the written recipe below for exact measurements, doneness, and food-safety details.

DIRECTIONS

How to make it

  1. 01

    Make the chile-yuja relish

    Finely chop the chiles and mix with the yuja marmalade and salt. Rest overnight for the roundest flavor, or at least 20 minutes.

  2. 02

    Cook the noodles

    Boil the noodles in salted water according to the package, about 5 minutes. Reserve 100 ml noodle water, then rinse the noodles thoroughly under cold water.

  3. 03

    Mix the cold broth

    Combine tsuyu, cold water, cooled noodle water, vinegar, and mustard. Chill well and taste; dilute if your tsuyu is highly concentrated.

  4. 04

    Assemble

    Place noodles in a chilled bowl, pour over the broth, and top with chile-yuja relish, grated radish, and shredded unseasoned seaweed.

COOK WITH CONFIDENCE

Fix common problems

Use the symptom, likely cause, and rescue step while you cook.

Noodles clump

Likely causeCooked noodles kept residual starch or sat too long.

How to fix itCook according to the package, rinse thoroughly in cold water and drain well. Assemble immediately; these packaged noodles do not need dough resting.

Cold broth is salty or diluted

Likely causeTsuyu concentration differs, or wet noodles and ice changed the dilution.

How to fix itFollow the bottle dilution ratio, taste while cold and adjust with chilled water. Drain noodles well before adding broth.

SHOP & SUBSTITUTE

Cook it anywhere

Ingredient swaps

Cheongyang chileUse serrano chile for similar fresh heat, or jalapeño for a milder relish.

Yuja marmaladeUse orange marmalade mixed with 1 teaspoon lemon zest.

TsuyuMix 2 tablespoons soy sauce, 1 teaspoon sugar, and 2/3 cup light dashi; chill before using.

Korean pantry guide

Yuja marmalade →유자청 · yuja-cheong

A fragrant Korean preserve of sliced yuja citrus and sugar, used in tea, dressings, and sauces.

Search: Korean yuja citron tea marmalade
Cheongyang chile →청양고추 · Cheongyang-gochu

A small green Korean chile with clean, assertive heat.

Search: Korean Cheongyang green chili pepper
🍚

Serve it with

  • Wasabi musaengchae
  • Steamed dumplings
  • A soft-boiled egg
🌶️

Spice level

Hot. Use 1–2 jalapeños for mild heat, 2–3 serranos for medium, or all 6 Cheongyang chiles for the original intensity.

♨️

Storage & serving

Keep relish and broth refrigerated separately for up to 4 days. Cook and rinse the noodles immediately before serving.

REAL COOK QUESTIONS

Good questions, clear answers

Short answers for substitutions, heat level, make-ahead cooking, and serving.

What can I substitute for Cheongyang chile in Memil Guksu (메밀국수)?

Use serrano chile for similar fresh heat, or jalapeño for a milder relish.

Is Memil Guksu (메밀국수) spicy?

Hot. Use 1–2 jalapeños for mild heat, 2–3 serranos for medium, or all 6 Cheongyang chiles for the original intensity.

Can I make Memil Guksu (메밀국수) ahead of time?

Keep relish and broth refrigerated separately for up to 4 days. Cook and rinse the noodles immediately before serving.

What should I serve with Memil Guksu (메밀국수)?

Serve it with Wasabi musaengchae, Steamed dumplings, A soft-boiled egg.

# memil guksu# cold noodles# yuja# Cheongyang chile