Japanese Ramen
Soy-Marinated Soft-Boiled Eggs (Ajitsuke Tamago)

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Elevate your homemade ramen with perfect ajitsuke tamago. These jammy, soy-marinated soft-boiled eggs pair beautifully with tender chashu pork and a rich, savory broth.

↓ The ingredients ↓ The steps

The secret to an exceptional bowl of ramen often lies in the toppings. Ajitsuke tamago, or soy-marinated eggs, bring a rich, umami flavor and a luscious, custard-like yolk that melts into the hot broth. Preparing them overnight allows the sweet soy marinade to deeply penetrate the egg whites, creating a striking contrast of textures and tastes.

A comforting bowl of Japanese ramen topped with jammy soy-marinated eggs, chashu pork, and seasoned bamboo shoots.
A comforting bowl of Japanese ramen topped with jammy soy-marinated eggs, chashu pork, and seasoned bamboo shoots.
Prep10 mins
Cook15 mins
Total25 mins
Yield2 servings
DifficultyMedium
Calories650 kcal

Ingredients

Instructions

  1. 1Prepare the marinade
    The ingredients for the marinade simmering in a rectangular pan on the stove.

    In a small pan, combine 150ml of water, 50ml of soy sauce, 50ml of cooking wine (mirin), and two large spoonfuls of sugar. Heat the mixture over the stove until it reaches a boil to ensure the sugar is fully dissolved.

    Tip: Be sure to stir the mixture occasionally while heating so the sugar does not burn at the bottom of the pan.
  2. 2Boil the eggs
    Five raw eggs being lowered into a large pot of actively boiling water.

    Carefully place raw eggs into a pot of boiling water. Let them cook for approximately six minutes to achieve a perfect soft-boiled consistency.

    Tip: Using a kitchen timer is essential to get the exact six-minute cook time for a runny yolk.
  3. 3Cool the eggs
    Cooked eggs being scooped out of the pot and moved into a bowl filled with ice and water.

    Immediately after the six-minute timer goes off, remove the eggs from the boiling water and transfer them directly into a bowl of ice water to stop the cooking process.

    Tip: Placing the eggs in an ice bath makes them much easier to peel later.
  4. 4Marinate the eggs
    Peeled soft-boiled eggs inside a plastic freezer bag, being covered with the dark soy-based marinade.

    Once the eggs are peeled, place them into a freezer-safe bag. Pour the cooled marinade mixture over the eggs, seal the bag, and refrigerate overnight to let the flavors develop.

    Tip: Using a freezer bag allows you to use less marinade while ensuring the eggs are fully submerged.
  5. 5Cook the noodles
    Yellow ramen noodles boiling in a pot of water on the stove.

    Bring a pot of water to a boil and add your ramen noodles. Cook according to the package instructions until they reach your desired texture.

    Tip: Keep an eye on the noodles to avoid overcooking them, as they will soften further in the hot soup.
  6. 6Add bean sprouts
    Fresh bean sprouts being added into the pot containing the boiling ramen noodles.

    Add a handful of fresh bean sprouts to the pot with the boiling noodles. Cook briefly until they are just tender yet still have a slight crunch.

    Tip: Adding the sprouts toward the end of the noodle cooking time keeps them from getting too soft.
  7. 7Slice the marinated eggs
    A perfectly halved soy-marinated egg on a cutting board, showcasing a vibrant, jammy yolk.

    Take the refrigerated, soy-marinated soft-boiled eggs and carefully cut them in half using a sharp knife. This reveals the perfect, custard-like runny yolk, which is the hallmark of a great ramen egg.

    Tip: Wipe your knife with a damp cloth between cuts to ensure a clean, smooth slice without dragging the yolk.
  8. 8Assemble the ramen bowl
    An assembled bowl of ramen featuring orderly rows of sliced pork, bamboo shoots, and marinated egg halves.

    Arrange the toppings meticulously over the prepared ramen noodles. Place the tender sliced pork, savory bamboo shoots, and the halved marinated eggs into the bowl to create a balanced and visually appealing presentation.

    Tip: Position the eggs on the side of the bowl so the vibrant yolks are clearly visible to the diner.
  9. 9Garnish and serve
    A steaming bowl of finished ramen being garnished with a sprinkle of vibrant, chopped green onions.

    For the final touch, sprinkle a generous amount of freshly chopped green onions over the assembled ramen bowl. Pour the hot soup carefully over the ingredients and serve immediately while steaming.

    Tip: The freshness of the green onions adds a necessary bright, crisp contrast to the rich, savory broth.

Storage & Reheating

Refrigerator
3 days
Keep unpeeled or peeled marinated eggs submerged in their liquid in an airtight container. Store broth and noodles separately.
Reheating
5 min
Heat the ramen broth on the stovetop until simmering. Never microwave the marinated eggs, as they can explode.

Burn It Off

Running
~65 minutes at an easy jog (~9 km/h).
Leisurely Cycling
~1 hour 45 minutes of relaxed riding (~15 km/h).
Pickleball
~1 hour 30 minutes of active competitive play.

Frequently Asked Questions

Using eggs that are too fresh can cause the membrane to stick to the shell. Dropping them straight into an ice bath immediately after boiling also helps shrink the egg slightly, making peeling much easier.
Yes, you can reuse the marinade once or twice within a week. Boil it for a minute before reusing to ensure food safety, or use it as a flavorful base for stir-fries.
Keep the eggs whole until just before serving, and place them on top of the noodles rather than submerging them deeply in the hot broth.
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