Jammy Soy-Marinated Ramen Eggs (Ajitsuke Tamago)
These ramen eggs (ajitsuke tamago) are soft-boiled just long enough to set the yolk into a jammy center, then soaked in a sweet-savory soy marinade.
Make a batch ahead of time and keep them in the fridge, and you have a quick protein boost that tastes like it came from a ramen shop.
What Makes These Eggs So Good
The marinade is balanced. It’s salty from soy, sweet from mirin and sugar, with a hint of sake to round it out. Nothing dominates.
The yolk is the real star. Boiling cold eggs for exactly six and a half minutes and then shocking them in ice water gives you a yolk that’s set around the edge and gooey in the middle. No powdery centers.
Ingredients
- 4 large eggs: straight from the fridge, cold eggs give consistent timing
- 1/2 cup soy sauce (120ml): regular Japanese soy sauce like Kikkoman; low-sodium works but needs a longer soak
- 1/4 cup mirin (60ml): adds sweetness and shine
- 1/4 cup sake (60ml): optional, deepens flavor; use water if you prefer
- 1/4 cup water (60ml): dilutes the brine so the eggs don’t get too salty too fast
- 2 tbsp sugar: white or light brown; adjust to your taste
Variations / Substitutions
- Soy sauce: tamari keeps it gluten-free
- Mirin: dry sherry with an extra teaspoon of sugar comes close
- Sake: simply leave it out and add an equal amount of water
- Sugar: honey or maple syrup work, the flavor will be a little softer
- Heat: a small dried chile or a slice of fresh ginger added to the marinade gives a gentle warmth
Creamy Japanese Egg Sandwich is a great main dish to serve alongside this ramen.
How to Make Jammy Soy-Marinated Ramen Eggs
Step 1: Boil the Eggs
Bring a medium pot of water to a rolling boil. Gently lower in 4 large cold eggs using a slotted spoon, then set a timer for 6 minutes and 30 seconds (for a jammy yolk; see notes for other textures). Keep the water at a gentle boil.
Step 2: Shock and Peel the Eggs
As soon as the timer goes off, transfer the eggs to a bowl of ice water using the slotted spoon. Let them sit for at least 3 minutes. Tap each egg gently on the counter, then peel under cool running water, starting from the wider end where the air pocket sits.
Step 3: Marinate the Eggs
In a small container that fits the eggs snugly, whisk together the 1/2 cup soy sauce, 1/4 cup mirin, 1/4 cup sake, 1/4 cup water, and 2 tablespoons sugar until the sugar dissolves. Add the peeled eggs, then place a small piece of paper towel directly on the surface of the liquid to keep them submerged. Cover and refrigerate for at least 4 hours, though overnight is even better.
Step 4: Slice and Reveal the Yolks
Lift the eggs from the marinade. Slice each egg in half lengthwise with a sharp, clean knife. Place them yolk-side up on a bowl of hot ramen, and watch the glossy center catch the light.
A Few Notes Before You Start
- For easier peeling, use eggs that are a few days old rather than farm-fresh.
- Don’t skip the ice bath; it stops the cooking instantly so you get that jammy center.
- The marinade is strong and will color the eggs quickly. A 4-hour soak gives a lightly seasoned yellow center with a thin soy-stained ring; overnight gives deeper flavor and a darker layer.
- Use leftover marinade for a quick stir-fry sauce or as a dipping sauce for dumplings, warm it up first.
- If the eggs sit in the marinade longer than 2 days, they can become too salty. Pull them out and store in a separate container.
Adjust the boil time for the yolk texture you prefer:
| Boil Time | Yolk Result |
|---|---|
| 6 mins | Runny, barely set white edge |
| 6 mins 30 sec | Jammy, soft-set throughout |
| 7 mins | Fudge-like, fully set but not crumbly |
Storing Leftovers
Keep the eggs in the marinade in the fridge for up to 2 days. They’ll gradually get saltier, so taste one before adding more soy to your dish. There’s no need to reheat them; the cold egg will warm up as soon as it hits hot broth.
What Goes Well with Ramen Eggs
They belong on any bowl of ramen, but they also work over a pile of steamed rice with a drizzle of the marinade and some chopped scallions. Tuck a few halves into a bowl of udon or a cold soba salad.
Frequently Asked Questions
Do I need to poke a hole in the eggshell before boiling?
No, it’s not necessary for this recipe. The eggs cook evenly and peeling is easy if you chill them well.
Can I reuse the marinade for another batch of eggs?
Yes, you can make one more batch. Bring the used marinade to a boil, let it cool, then add fresh boiled eggs. The color and flavor will be lighter the second time.
Can I freeze marinated eggs?
Freezing is not a good idea. The egg white turns rubbery and spongy once thawed. Keep them in the fridge instead.
Can I use this marinade for soft-boiled eggs that aren’t peeled?
The marinade only works on peeled eggs so it can penetrate the white. You can use it for onsen eggs (poached in shell) after peeling, but it won’t season through the shell.
Ramen Egg Recipe
Ingredients
Method
- Bring a medium pot of water to a rolling boil. Gently lower in 4 cold eggs, then boil for exactly 6 minutes and 30 seconds.
- Transfer the eggs to a bowl of ice water and let them sit for 3 minutes. Peel under cool running water.
- In a small container, whisk together the soy sauce, mirin, sake, water, and sugar until the sugar dissolves. Add the eggs and place a paper towel on top to submerge them. Cover and refrigerate at least 4 hours.
- Slice the eggs in half lengthwise and serve on hot ramen.
Notes
