Korean Kimchi Beef Tofu Soup (Sundubu-Style)

By DishFrames
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A rich, sour, and spicy Korean-style stew packed with tender marinated beef, smooth tofu cubes, and enoki mushrooms in a vibrant red broth. Perfect for chilly days.

↓ The ingredients ↓ The steps

Inspired by classic Korean comfort food, this kimchi beef tofu soup combines punchy fermented kimchi with a savory chili paste broth. Thinly sliced marinated beef and silky tofu absorb the bold flavors, making every spoonful deeply satisfying. It is quick to throw together on a weeknight and brings cozy warmth straight to your table.

A vibrant pot of Korean Kimchi Beef Tofu Soup simmering with beef, tofu, enoki mushrooms, and fresh chili slices.
A vibrant pot of Korean Kimchi Beef Tofu Soup simmering with beef, tofu, enoki mushrooms, and fresh chili slices.
Prep15 mins
Cook10 mins
Total25 mins
Yield2 servings
DifficultyEasy
Calories420 kcal

Ingredients

Instructions

  1. 1Slice the beef
    Thin slices of raw beef being cut on a wooden cutting board.

    Take a piece of raw beef and slice it into thin pieces on a wooden cutting board.

    Tip: Make sure your knife is sharp to get even, thin slices.
  2. 2Marinate the beef
    Raw beef slices in a ceramic bowl with soy sauce, cooking wine, and starch added on top.

    Place the sliced beef into a bowl and add soy sauce, cooking wine, and starch.

    Tip: Adding starch helps lock in the moisture for a tender texture.
  3. 3Mix the marinade
    A gloved hand mixing marinade into raw beef slices inside a bowl.

    Using a gloved hand, thoroughly mix the soy sauce, cooking wine, and starch into the beef slices until well combined.

    Tip: Massage the marinade gently into the beef to ensure every piece is coated.
  4. 4Prepare the sauce
    Ingredients for the sauce being mixed together in a bowl.

    In a bowl or small pot, combine soy sauce, Korean chili paste, chili powder, a little bit of sugar, and half a bowl of water, then stir well.

    Tip: Adjust the chili powder and paste according to your spice preference.
  5. 5Stir-fry the onions
    Slices of white onion being stir-fried in a shallow metal pan with oil.

    Heat a small amount of oil in a pan over medium heat, then add the sliced onions. Stir-fry them continuously until they become soft, translucent, and fragrant, creating a flavorful aromatic base for the soup.

    Tip: Keep the heat at medium so the onions soften and sweeten without burning.
  6. 6Stir-fry onions and kimchi
    Sliced onions being stir-fried in a hot pan.

    Heat a pan, add some oil, and stir-fry the onion slices until soft, then add an appropriate amount of kimchi and stir-fry evenly.

    Tip: Stir-frying the kimchi brings out a deeper, richer flavor before adding liquid.
  7. 7Pour in the sauce and water
    Thick red Korean chili sauce being poured from a white ceramic pitcher into a cooking pan.

    Pour the previously mixed sauce—consisting of soy sauce, Korean chili paste, chili powder, and a touch of sugar—along with half a bowl of water directly into the pan with the onions and kimchi.

    Tip: Rinse the mixing bowl with a splash of water to get all the leftover chili paste into the pan.
  8. 8Add mushrooms, tofu, and beef
    A pan filled with simmering red kimchi broth surrounded by fresh ingredients like enoki mushrooms and chili peppers.

    Add the enoki mushrooms, cubed tofu, and marinated raw beef slices directly into the bubbling red broth. Allow all the ingredients to simmer together for 3 to 5 minutes so they absorb the rich, spicy flavors.

    Tip: Do not overcook the beef slices to ensure they remain tender and juicy.

Storage & Reheating

Refrigerator
2 days
Store in an airtight container once fully cooled.
Reheating
5 min
Reheat gently on the stovetop over medium-high heat until piping hot before serving.

Burn It Off

Brisk Walking
~85 minutes at a steady daily pace.
Leisurely Cycling
~70 minutes of casual riding (~15 km/h).
House Cleaning
~1 hour and 40 minutes of practical chores.

Frequently Asked Questions

Aged, sour kimchi yields a much richer and more authentic depth of flavor for this soup. If using fresh kimchi, you can add a small splash of kimchi juice or a tiny splash of rice vinegar to mimic that signature tang.
Thinly sliced beef chuck, ribeye, or pre-sliced hotpot beef works best because it cooks quickly and stays tender in the simmering broth.
You can control the heat by reducing or increasing the amount of Korean chili paste and chili powder, or by omitting the fresh chili slices on top.
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