Mul Naengmyun (Cold Korean Noodle Soup With Asian Pear and Cucumber)

With a refreshing, lightly sweet-tart broth, slick, chewy noodles, and crisp toppings like cucumber and pickled radish, it's perfect for beating the summer heat

A bowl of mul naengmyun with a spoon and metal chopsticks inserted into it.

Serious Eats / Daniel Gritzer

Why This Recipe Works

  • Poaching beef in chicken broth adds an extra dimension of flavor without the need to make a separate beef broth.
  • Adding gelatin to store-bought chicken broth, if not using homemade, adds just enough body to create a slushy-textured soup that melts slowly, without unpleasant ice shards.
  • A touch of either sugar and vinegar, or the brine from pickled radishes, adds a pleasant sweet-tart flavor to the broth.

Come summer, gazpacho recipes are about as predictable as the heat that inspires them. I don't mean to sound dissatisfied, because I love gazpacho as much as anyone—who wouldn't want a refreshing chilled soup made from some of the best ingredients of the season? But this summer, I've been sustained by an entirely different cold soup, and now I want to share it with you.

I'd like to introduce you to mul naengmyun, a Korean soup made from a sweet-tart, icy-cold broth, chewy buckwheat noodles, and refreshing toppings like cucumber, pickled radish, and Asian pear. I eat at Korean restaurants several times a month, and this dish has been my repeat choice throughout the summer. So, with guests coming over for dinner the other weekend, and with uncomfortably high temperatures predicted, I decided I'd try my hand at cooking a version of it at home.

Rule #1 of dinner parties: never cook a dish for the first time.

I really have to thank my dinner guests for this recipe though, because they suffered through my first botched attempt—the chilled soup that sat, refusing to melt, like blocks of Jell-O in their bowl. I still don't know how they managed to choke it down, but it was a necessary failure that led me to a recipe that works.

The Stock: What Went Wrong and How I Fixed It

In short, I was foiled by my own cooking orthodoxy. One of the rules I generally live by is that a good stock should be simmered slowly to extract as much gelatin as possible from bones and meat scraps: when chilled, it should set into a firm gel. It's one of the secrets to creating soups and sauces that are rich and full-bodied even before any butter or other fat is whisked in.

I figured this large load of gelatin would be a good thing for a chilled soup. Because gelatin inhibits ice-crystal formation while acting as a stabilizer to slow down melting (which is why it's sometimes added to ice-cream bases as well), I figured it would help my broth freeze less hard, and would slow its melting to prolong the slushy experience—perfect for a soup that should be served partially frozen with a slightly slushy texture*.

*Some folks just serve the broth chilled and drop ice cubes into it, but the idea of water melting into and diluting the broth didn't appeal to me, so I went with the slightly trickier soup-slush version.

In my first pass at the broth—the version I served to my hapless guests—I went for maximum gelatin, loading my stockpot with connective tissue-rich ingredients like chicken feet and a cow's foot. But I forgot one little detail: I was making a cold soup, not a hot one. Too much gelatin wasn't just going to slow the melting point and prolong the slushy experience, it was going to prevent it from melting altogether. Even at room temperature, I had a solid mass on my hands. Instead of serving my guests an icy soup, I was forced to serve them a quivering bowl of meat jelly.

A stainless steel pot holding cut piece of beef bones, water, and vegetables.

Serious Eats / Daniel Gritzer

After that, I realized that I to scale back my ambitions to make a simpler broth—one with a milder amount of gelatin in it. At its easiest, the broth I came up with is just store-bought chicken broth enhanced with fresh ginger, scallions, garlic, and a small amount of unflavored gelatin. Even better, though, is if you use homemade chicken stock, in which case a quick infusion from the aromatics and no extra gelatin (since homemade stock should already have at least a little) is all that's needed.

A stainless steel pot holding chicken broth cooked with vegetables, with some thinly sliced, uncooked beef on top.

Serious Eats / Daniel Gritzer

When researching this recipe, I found many examples that called for a one to one blend of chicken and beef broth. Unfortunately, it's not practical for everyone to get beef bones, and most store-bought beef broth is not very good. So I decided to infuse the chicken broth with a little beef flavor by quickly poaching thinly sliced beef brisket in it. The cooked brisket is frequently served in mul naengmyun anyway, so why not get its flavor into the broth?

One other important lesson I learned about homemade broth: it's important to skim it completely of all of its fat (you can do this by removing the fat disk after the broth has chilled). Cold animal fat leaves an unpleasant waxy texture in the finished dish.

A plastic quart container holding a mix of frozen chicken stock and gelatin. The stock has broken up in a way where it is visually granular, indicating it has the right texture.

Serious Eats / Daniel Gritzer

Before freezing the finished broth, the final step was to add some pickling liquid from Korean pickled radish, which is both sweet and vinegary. I went to a Korean supermarket and found the pickled radish product below, but if you can't find it, don't worry: you can add a splash of rice vinegar and a touch of sugar to the broth instead for a similar flavor. Either way, go easy on it, since the soup is served with vinegar on the side for diners to add according to their tastes.

A plastic container of pickled radish slices.

Serious Eats / Daniel Gritzer

The Noodles

I don't speak Korean, but if I understand correctly the "naengmyun" in mul naengmyun refers to the cold noodles typically served in this soup. Often made at least in part from buckwheat, they're incredibly quick-cooking and have a slippery, chewy texture.

A package of noodles made for mul naengmyun.

Serious Eats / Daniel Gritzer

The package I bought had the noodles conveniently separated into portion sizes, which made things very easy.

The uncooked, still-dry noodles removed from their packaging.

Serious Eats / Daniel Gritzer

As soon as they're cooked, which only took a minute or two, I ran them under cold water until thoroughly chilled to prevent them from overcooking and to rinse off any excess starch that could cause them to stick together. I pressed out the excess water before setting the noodles into bowls.

Cooked noodles being drained in a colander and rinsed with running water.

Serious Eats / Daniel Gritzer


With the stock set and the noodles cooked, I arranged fresh toppings on the soup to serve.

I went with the things I've seen it served with it restaurants: silvers of cucumber and pickled radish, along with Asian pear (pictured here), hard-boiled egg, and those brisket slices.

A whole Asian Pear.

Serious Eats / Daniel Gritzer

At the table, pass around some mustard or mustard oil as well as some vinegar. Diners can add each to make the soup as piquant and tangy as they like.

A pair of Korean metal chopsticks lifting cooked noodles out of a composed bowl of mul naengmyun

Serious Eats / Daniel Gritzer

Am I saying that mui naengmyun is going to outright replace your gazpacho as the summer soup of choice? No. But it's gonna try its hardest to give that gazpacho a run for its money.

September 2014

Recipe Details

Mul Naengmyun (Cold Korean Noodle Soup With Asian Pear and Cucumber)

Active 40 mins
Total 6 hrs
Serves 4 servings

With a refreshing, lightly sweet-tart broth, slick, chewy noodles, and crisp toppings like cucumber and pickled radish, it's perfect for beating the summer heat


  • 2 quarts homemade or store-bought low-sodium chicken stock

  • 3 whole scallions (1 left whole, 2 thinly sliced for garnish)

  • 1 (1-inch) piece fresh peeled ginger

  • 4 medium cloves garlic

  • 1 packet unflavored gelatin softened in 1/4 cup water for 1 minute, if using store-bought broth

  • 1/2 pound thinly sliced beef brisket

  • Kosher salt

  • 1 (12-ounce) package Korean pickled radish with brine (see note), julienned

  • 4 portions Korean naengmyun noodles (see note)

  • 1/2 cup julienned cucumber, for garnish

  • 1/2 cup julienned peeled Asian pear, for garnish

  • 4 large hard-boiled eggs, peeled and halved

  • Rice vinegar, for serving

  • Mustard or mustard oil, for serving


  1. In a medium pot, combine stock with whole scallion, ginger, and garlic and simmer, covered, for 20 minutes. If using store-bought broth, stir in softened gelatin until dissolved.

  2. Gently poach brisket slices in simmering broth until just cooked, about 30 seconds to 1 minute. Using a wire mesh spider or a slotted spoon, transfer brisket to a plate and let cool slightly, then cover with plastic wrap and refrigerate. Season broth with salt. Add pickled radish brine to taste (you want the broth very slightly sweet and tart). Strain broth through a fine mesh strainer into a large heatproof container, discarding solids, and refrigerate until chilled, about 2 hours.

  3. Skim all fat from surface of chilled broth. Transfer broth to freezer until frozen, at least 3 hours. Before serving, remove broth from freezer and either allow to defrost partially, or microwave in 30-second intervals until partially defrosted. Using a butter knife, break partially frozen broth up into a slushy texture.

  4. In a pot of salted boiling water, cook noodles following package instructions. Run under cold water until chilled, then squeeze out excess water.

  5. Arrange noodles in deep bowls. Spoon slushy broth all around and top with pickled radishes, cucumber, Asian pear, eggs, chilled poached brisket, and remaining sliced scallions. Serve, passing rice vinegar and mustard or mustard oil at the table for diners to season to taste.


If you can find pickled Korean radishes, you can add their brine to the broth for a slightly sweet-tart flavor. If not, add a very small amount of sugar and rice vinegar to taste for a similar effect. Naengmyun noodles can be found at Korean markets; they are often sold pre-portioned, making it easy to select the right number of servings (if not, each serving should be roughly 100 grams uncooked noodles).

Nutrition Facts (per serving)
398 Calories
17g Fat
28g Carbs
33g Protein
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Nutrition Facts
Servings: 4
Amount per serving
Calories 398
% Daily Value*
Total Fat 17g 22%
Saturated Fat 5g 25%
Cholesterol 232mg 77%
Sodium 1316mg 57%
Total Carbohydrate 28g 10%
Dietary Fiber 3g 9%
Total Sugars 3g
Protein 33g
Vitamin C 6mg 32%
Calcium 90mg 7%
Iron 6mg 32%
Potassium 1099mg 23%
*The % Daily Value (DV) tells you how much a nutrient in a food serving contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.
(Nutrition information is calculated using an ingredient database and should be considered an estimate.)