Introduction

Bibim guksu sauce (비빔국수 양념장) is the bright red dressing that turns plain thin wheat noodles into bibim guksu, Korea’s favorite spicy cold mixed noodles. “Bibim” means mixed and “guksu” means noodles, so the whole dish is about tossing chilled noodles in a sauce that is sweet, sour and spicy all at once. It is a classic summer lunch, a popular partner for Korean BBQ, and one of the fastest Korean dishes you can make at home with pantry staples like gochujang.

Bibim Guksu Sauce at a Glance

Quick facts

• What it is: a sweet, sour and spicy gochujang dressing for cold noodles
• Main ingredients: gochujang, gochugaru, vinegar, sugar, soy sauce, sesame oil, garlic
• Taste: tangy and sweet first, then a lingering chili heat
• Main uses: bibim guksu, bibim naengmyeon, jjolmyeon, cold noodle salads

What is Bibim Guksu Sauce Made Of?

The base is gochujang mixed with gochugaru (Korean chili flakes) for color and heat. Vinegar and sugar give the sauce its signature sweet-and-sour balance, a little soy sauce adds savory depth, and toasted sesame oil, sesame seeds and minced garlic round it out. Many Korean home cooks also add a spoonful of finely chopped sour kimchi or a splash of kimchi juice, and some use corn syrup or fruit purée (apple or Asian pear) for a smoother sweetness. It is close to chogochujang, but usually a bit thicker, nuttier and more garlicky.

Types of bibim noodle sauce

• Homemade bibim guksu sauce: gochujang, vinegar, sugar, sesame oil and garlic mixed fresh.
• Kimchi bibim sauce: the same base with chopped sour kimchi and kimchi juice.
• Bottled bibim noodle sauce: ready-made sauces sold in squeeze bottles at Korean markets.
• Instant bibim noodle packets: dried noodles packaged with a sachet of sweet-spicy sauce.

What Does Bibim Guksu Sauce Taste Like?

The first taste is sweet and tangy, almost like a spicy vinaigrette, followed by the fermented depth of gochujang and a warm chili kick. Sesame oil gives a toasty finish. Because the noodles are served cold, the sauce tastes refreshing rather than heavy, and the heat level is medium for most people.

Popular Korean Dishes That Use Bibim Guksu Sauce

Bibim guksu

Thin somyeon noodles tossed with the sauce and topped with cucumber, egg and kimchi. Recipe below.

Bibim naengmyeon

Chewy buckwheat noodles with a similar spicy sauce, a classic of naengmyeon restaurants.

Golbaengi muchim

Spicy sea snail salad served with plain somyeon, which is mixed into the leftover sauce.

Bibim mandu

Crispy flat dumplings served with shredded vegetables dressed in a sweet-spicy sauce.

Easy Bibim Guksu Recipe (Serves 2)

Ingredients

• 7 oz (200 g) somyeon (thin wheat noodles)
• 1/2 cucumber, cut into thin matchsticks
• 1/2 cup sour kimchi, finely chopped
• 1 hard-boiled egg, halved
• A handful of lettuce or perilla leaves, shredded (optional)

Bibim guksu sauce

• 3 tbsp gochujang
• 1 tbsp gochugaru
• 3 tbsp vinegar (rice or apple cider)
• 2 tbsp sugar (or 1 tbsp sugar + 1 tbsp corn syrup)
• 1 tbsp soy sauce
• 1 tbsp toasted sesame oil
• 1 tsp minced garlic
• 1 tbsp toasted sesame seeds

Instructions

1. Mix all the sauce ingredients in a bowl until the sugar dissolves. Chill it while you cook the noodles.
2. Bring a large pot of water to a boil and cook the somyeon according to the package, usually 3–4 minutes. If the water foams up, add a splash of cold water.
3. Drain the noodles and rinse them under cold running water, rubbing them with your hands to remove the starch. Rinse until completely cold, then drain well.
4. Put the noodles in a large bowl with the chopped kimchi and about three-quarters of the sauce. Toss with your hands (wear gloves) or chopsticks until every strand is coated.
5. Divide into bowls, top with cucumber, lettuce and the egg, and add more sauce to taste.

Tip: Make the sauce a day ahead. Resting overnight in the fridge softens the raw garlic and chili flavor and makes it taste more balanced.

Where to Buy Bibim Guksu Sauce and Somyeon

United States

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Amazon
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H-Mart
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Canada

Search Korean bibim noodle sauce on Amazon.ca

Europe

Search Korean bibim noodle sauce on Amazon.co.uk

How to Store Bibim Guksu Sauce

Homemade sauce keeps in a clean, sealed jar in the refrigerator for about 1–2 weeks; leave out the kimchi and add it when serving for the longest life. Bottled sauce should be refrigerated after opening and used by the date on the label. Cooked noodles do not keep well, so dress only what you will eat.

Bibim Guksu Sauce FAQ

Is bibim guksu very spicy?

It is medium-spicy. The sugar and vinegar soften the heat, and you can cut the gochugaru for a milder version.

Is bibim guksu sauce the same as bibimbap sauce?

They are related, but bibim guksu sauce has more vinegar and sugar, so it is tangier. Bibimbap sauce is usually less sour.

Can I use other noodles?

Yes. Buckwheat noodles, jjolmyeon, angel hair pasta or even zucchini noodles all work with this sauce.

Why rinse the noodles in cold water?

Rinsing removes surface starch so the noodles stay springy and do not clump, and it chills them for a refreshing bite.

Conclusion

Bibim guksu sauce is one of the most useful Korean sauces to keep in the fridge: a few pantry staples become a sweet, tangy and spicy dressing for cold noodles in minutes. Try it with chewy jjolmyeon next, or learn more about its base in our gochujang guide.