Ramen eggs (ajitsuke tamago)
Ramen eggs are jammy eggs soaked in a sweet and salty soy marinade until the whites turn brown and the yolks pick up the flavour. They're little work, and they keep a few days in the fridge.

Ingredients
- 6 large eggs, straight from the fridge
- ½ cup (125 ml) soy sauce
- ¼ cup (60 ml) mirin
- ½ cup (125 ml) water
- 1 tablespoon sugar
Steps
- Warm the soy sauce, mirin, water and sugar in a small pot until the sugar dissolves. Let it cool.
- Lower the eggs into gently boiling water and cook for 6½ to 7½ minutes. Use the egg timer set to Jammy.
- Move them straight into ice water for 10 to 15 minutes.
- Peel them gently. Soft-centred eggs tear easily, so peel under water.
- Put the eggs and marinade in a small container or a zip-top bag. Lay a folded paper towel on top so the eggs stay covered.
- Marinate in the fridge for 6 hours to overnight.
How long to marinate
Six hours gives a light brown edge and a mild flavour. Overnight gives a deeper colour and more seasoning in the yolk. Leave them a day or two and they get saltier and the yolk firms up. Past that they're mostly salt.
Without mirin
Replace the mirin with ¼ cup (60 ml) of water and 1 more tablespoon of sugar. A teaspoon of rice vinegar adds back a little of the tang.
Storing them
Keep them in the marinade in the fridge. Because the yolks are soft, treat them like a cooked egg dish: USDA says to use those within 3 to 4 days. Make a fresh marinade for each batch rather than reusing the old one.
Soft yolks also carry some food-safety risk. See the note on runny yolks.
Serving
Halve them with a thin knife and set them on ramen, rice bowls or noodles. They're also good on their own as a snack.
Questions people ask
How long do you boil eggs for ramen?
6½ to 7½ minutes for a jammy yolk, then straight into ice water. That's for large eggs from the fridge, lowered into boiling water.
Can I use soft boiled eggs for ramen?
Yes. 6 minutes gives a runnier centre, but the eggs are harder to peel and can split in the marinade.
Can I make ramen eggs without mirin?
Yes. Use extra water and sugar in place of the mirin, and a splash of rice vinegar if you have it.
How long do ramen eggs last?
Keep them in the fridge in their marinade and eat them within 3 to 4 days, USDA's guidance for cooked egg dishes.