Marinated Soft-Boiled Eggs for Ramen: Recipe and Serving Ideas

The marinated soft-boiled egg (ajitsuke tamago) you see as a ramen topping at noodle shops is something truly special: a runny yolk wrapped in a savory, deeply seasoned white. The good news is you can easily make it at home.

This article covers everything from achieving the perfect soft-boil, to the marinade recipe, to ways to enjoy these eggs beyond ramen.

How to Boil the Perfect Soft Egg

What You Need

• Eggs: 4 to 6 (straight from the fridge)
• Water: fill a pot generously
• Ice water: prepare a bowl in advance

Boiling Steps

1. Bring a pot of water to a rolling boil
2. Gently lower cold eggs into the water using a ladle or spoon
3. Reduce to medium-low heat and boil for 6 minutes 30 seconds to 7 minutes (this is key)
4. Transfer immediately to ice water and chill for at least 5 minutes
5. Peel once cooled

Boiling Time Guide

• 6 min 30 sec: center of the yolk is runny. Perfect for marinating to a soft-set finish
• 7 min: outer yolk slightly set, center stays creamy
• 8 min: between soft and hard-boiled. Good for bento

Times may vary slightly depending on egg size and fridge temperature. Try a few times to find your preferred doneness.

Tips for Clean Peeling

• A thorough ice bath creates a gap between the shell and white, making peeling easier
• Tap the round end, then peel under water for a smooth finish
• Very fresh eggs can be harder to peel. Eggs bought a few days earlier work better

Marinade Recipe

Basic Marinade (Soy Sauce Base)

• Soy sauce: 100 ml
• Mirin: 50 ml
• Sake: 50 ml
• Water: 50 ml
• Sugar: 1 tablespoon

Directions:

1. Add mirin and sake to a small pot, simmer for about 1 minute to cook off the alcohol
2. Add remaining ingredients, stir well, and bring to a brief boil
3. Remove from heat and let cool

Quick Version with Mentsuyu

Short on time? Mentsuyu (concentrated noodle soup base) makes it even easier.

• Mentsuyu (3x concentrate): 100 ml
• Water: 100 ml

That's all you need for a delicious result.

Marinating Method

1. Pour the marinade into a zip-lock bag
2. Gently place the peeled soft-boiled eggs inside
3. Press out as much air as possible and seal (make sure the eggs are submerged)
4. Refrigerate for at least 4 hours, ideally overnight (8 to 12 hours)

Using a zip-lock bag means you need less marinade while ensuring full coverage. Flip the bag once halfway through for an even color.

Marinating Time and Flavor Changes

• 4 hours: light color on the white's surface, gentle flavor
• 8 to 12 hours (overnight): deep flavor, beautiful amber color
• 24+ hours: quite intense. Remove from marinade at this point if you're watching salt intake

Storage and Shelf Life

• In marinade, refrigerated: about 3 to 4 days
• Removed from marinade, refrigerated: about 2 days
• Freezing is not recommended as the yolk texture will change

In HCMC's heat, avoid leaving eggs at room temperature for long. For bento, pack with an ice pack for safety.

Beyond Ramen

Marinated eggs aren't just for ramen. Serve them over rice, as a donburi topping, halved as a snack, in salads for extra substance, in bento boxes, or on top of curry rice.

Great Eggs Start with Great Ingredients

The taste of marinated eggs depends heavily on egg quality. Fresh eggs with a rich, deep yolk make a noticeable difference in both appearance and flavor.

Looking for quality eggs in HCMC? Download the Farmi app. Fresh eggs delivered to your door via cold-chain shipping.

Note: this article and some images were created with the help of AI (artificial intelligence) and reviewed by our editorial team before publication.