15-Minute Creamy Korean Soy Milk Noodles (Easy Kongguksu Hack!)-Cold Summer Noodles

⏱️ Quick Overview Box

  • ⏱️ Prep & Cook: 15 Mins

  • πŸ”₯ Difficulty: Super Easy (No Blender Needed!)

  • πŸ₯€ Flavor Profile: Ultra-Creamy, Nutty, and Refreshing Summer Comfort


A refreshing bowl of Korean Cold Soy Milk Noodles (Kongguksu) with ice cubes, topped with crunchy cucumber, cherry tomatoes, walnuts, and sesame seeds.


🍜 Introduction

When summer heat strikes, Koreans turn to a chilled, protein-packed bowl of Kongguksu (Chilled Soy Milk Noodles). While traditional recipes require soaking and blending soybeans for hours, this genius hack gets you that deep, authentic creaminess in just 15 minutes using pure, unsweetened soy milk!

By adding freshly crushed roasted sesame seeds and walnuts, you create a velvety broth so rich, no one will guess it didn’t take all day. Perfect for a quick, cooling, and healthy summer meal!

Ingredients for Korean soy milk noodles including soy milk, noodles, sesame, and walnuts


πŸ“Š Ingredients (For 3 Servings / 3그릇 κΈ°μ€€)

Ingredient (재료)Amount (Metric)US / Global Scale (λ“€μ–Ό κ³„λŸ‰)Substitute / Cooking Tip (λŒ€μ²΄ 및 팁)
Unsweetened Soy Milk1200ml40.5 fl oz (approx. 5 Cups)Pure, sugar-free soy milk
Jung-myeon Noodles300g10.5 oz (3.5 oz per person)100g per serving. Can substitute with Angel Hair pasta
Roasted Walnuts / Mixed Nuts3-4 Korean Rice Spoons (Heaping)3-4 tbsp (approx. 30g / 1 oz)Crushed walnuts give the ultimate buttery flavor
Roasted Sesame Seeds3-4 Korean Rice Spoons3-4 tbsp (approx. 25g / 0.9 oz)Crushed to release aromatic oils
Korean Flower Salt1/3 tsp (Per Bowl)1/3 tsp per servingAdjust to taste right before eating
Cucumber1/3 piece1/3 pieceJulienne thin for a crunchy garnish
Cherry Tomatoes6-12 pieces6-12 pieces2 to 4 pieces per bowl for color & acidity

πŸ₯› How to Choose the Perfect Soy Milk (No Fail Guide!)

To get that authentic, deeply savory Korean Kongguksu flavor, choosing the right soy milk at your local grocery store is 90% of the game. 
Foreign grocery stores have dozens of soy milk options, and picking the wrong one will ruin your noodles. Here is how to buy like a pro.

⚠️ The Golden Rule: "Unsweetened & Plain"

You MUST look for the word "Unsweetened" (sugar-free) and "Plain" on the carton. 
NEVER buy "Original"—in Western supermarkets, "Original" soy milk almost always contains added cane sugar and vanilla flavoring. Mixing vanilla-sweetened soy milk with savory noodles is a recipe for disaster!

πŸ” Check the Ingredient List (Simple is Best)

Turn the carton over and look at the ingredients. The best soy milk for Kongguksu should only have two ingredients: Water and Soybeans (sometimes a pinch of salt). 
Avoid brands with thickeners, gums (like gellan gum or carrageenan), or heavy oils added.

πŸ’‘ Recommended Global Brands (Available at Walmart, Whole Foods, Tesco, etc.)

WestSoy (Unsweetened Plain) - Highly Recommended! It usually contains just organic soybeans and water.
Edensoy (Unsweetened Organic Soy Milk)
Silk (Unsweetened Organic Soymilk) - Make sure it specifically says "Unsweetened" on the green/white carton.


πŸ‘©‍🍳 Step-by-Step Masterclass

πŸ’‘ Step 1: Crushing the Nutty Magic

Put 3-4 Rice Spoons of roasted sesame seeds into a ziplock bag and crush them thoroughly with a rolling pin or kitchen mallet until they turn into a coarse powder. Do the exact same thing with your roasted walnuts.

Crushing roasted sesame seeds in a ziplock bag using a rolling pin
Crushing roasted walnuts in a ziplock bag with a kitchen mallet


  • πŸ”₯ The Secret Move: Do NOT grind them into a paste! Crushing them manually breaks the cells just enough to release the aromatic oils, creating a deeply savory, textured crunch that infuses beautifully into the soup.

πŸ’‘ Step 2: The Ice-Cold Broth Build

In a large pitcher, mix the 1200ml (40.5 fl oz) of unsweetened soy milk with the finely crushed sesame seeds and walnuts. Stir well to combine all the nutty flavors, then keep it in the refrigerator so it stays bone-chillingly cold.

πŸ’‘ Step 3: Fresh Topping Prep

Slice 1/3 of a cucumber into thin, elegant matchsticks. Cut your cherry tomatoes in half so you have 2 to 4 beautiful pieces ready to garnish each individual bowl.

πŸ’‘ Step 4: Boiling the Noodles to Perfection

Bring a generous pot of water to a rolling boil. Add 300g (10.5 oz) of jung-myeon noodles (exactly 100g per person).

A hand holding a portion of Korean jungmyeon noodles over boiling water


Spread them out evenly in the pot and boil for exactly 3 minutes and 30 seconds, stirring occasionally.

Jungmyeon noodles spreading out in a boiling pot of water
Stirring boiling noodles in a pot with metal chopsticks


  • ⚠️ Crucial Step: The second the timer goes off, immediately drain the noodles and plunge them into ice-cold water. Wash and rub the noodles vigorously with your hands. This completely removes the surface starch, locking in that signature chewy, bouncy texture!

Washing boiled noodles under cold running water in a strainer


πŸ’‘ Step 5: Beautiful Plating & Custom Seasoning

Twirl the chilled, bouncy noodles into 3 large serving bowls. Pour the rich, nutty soy milk broth generously around the noodles.

Pouring packaged pure soy milk into a bowl of noodles


Artfully top each bowl with the crunchy cucumber matchsticks and cherry tomato halves.

Three bowls of Korean cold soy milk noodles garnished with cucumber, tomatoes, and nuts


Serving Tip: Serve it alongside a tiny dish of Korean flower salt (roughly 1/3 tsp per bowl). True Korean Kongguksu is seasoned by the diner right before eating, allowing everyone to adjust the savory balance to their exact liking!

Lifting bouncy noodles with chopsticks from a rich, creamy soy milk broth

πŸ’¬ Wrap-Up & Chef's Thoughts

And there you have it! A bowl of ultra-creamy, protein-packed Korean Soy Milk Noodles (Kongguksu) made in just 15 minutes. It is the ultimate guilt-free, refreshing comfort food that will keep you cool and energized all summer long.

The crunch of the fresh cucumbers, the subtle sweetness of cherry tomatoes, and that unbelievable nutty burst from the freshly crushed walnuts and sesame seeds make every single bite a joy.

  • ❓ Do you prefer it salty or sweet? Some Koreans love adding a pinch of sugar instead of salt to their Kongguksu! Let me know in the comments below how you seasoned your bowl!

  • πŸ“Œ If you loved this quick summer hack, don't forget to save this recipe and share it with your friends who need a cooling noodle fix!

πŸ˜‹ More Easy Korean Recipes You'll Love!

If you enjoyed this quick and delicious recipe, you will absolutely love these other simple Korean dishes that are perfect for beginners:

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