Known as Ajitsuke Tamago or Ajitama in Japanese, Ramen Eggs are delicious as a topping on ramen or enjoyed as a snack. Learn to make these flavorful, perfect soft-boiled eggs with just five ingredients!

A great bowl of ramen is built upon a few significant components. There’s hot broth, fresh-made noodles, and the toppings. As far as the toppings go, no one can resist a perfectly cooked ramen egg that sits alongside sliced chashu, a sheet of nori, and green onions. Some would even argue that ramen egg is a must!
When done right, ramen egg is creamy, silky, full of umami, and ready to enrich and intensify your ramen enjoyment. The truth is, ramen eggs are not just for ramen alone. You can enjoy these delicious eggs anytime, in many different ways!
Table of contents
What Are Ramen Eggs
Ramen eggs are Japanese soft-boiled eggs known for their custardy, jammy, runny yolk, and umami flavor. They are marinated overnight in a sweetened soy-based sauce. In Japan, we call these marinated eggs Ajitsuke Tamago (味付け玉子), short for Ajitama (味玉) or Nitamago (煮玉子).
While these eggs are excellent on ramen, they are also fantastic to enjoy as a side dish, snack, or packed in a bento. Don’t limit yourself there! You can even add them to salads or sandwiches. That’s the magic of ramen eggs. They are so good and amazingly versatile.

How to Make Ramen Eggs
Ingredients You’ll Need
Five ingredients are all you need, and you’ll be surprised at how easy it is to make ramen eggs at home.
- Good quality eggs, especially if you plan to make soft-boiled eggs
- Soy sauce
- Mirin
- Sake (or water)
- Sugar
For the marinade, you can create your own version with additions (such as chili flakes for spice, etc), but let’s stick with the basics.
What changed from the 2011 Recipe?
Some of you might be familiar with the original recipe I shared in 2011. In the past, I used water instead of sake. However, for food safety reasons, I started making my ramen eggs with sake and like this version much better.
Why sake? The amino acids in the fermented rice wine enhance food flavors by adding hints of sweetness and umami, which makes the eggs taste better. In case you’re wondering, we would boil off the alcohol from the sake before marinating the eggs so it’s perfectly safe for kids to consume.
As part of the refinement, I also added a bit of sugar. To put the old and new recipes to the test, I had my family try out the two versions multiple times, and they concluded that the winner goes to this updated recipe. For those who can’t consume alcohol, you can still use water.
Overview: Quick Steps
- Make the marinade.
- Cook soft-boiled eggs.
- Marinate the eggs overnight.

Important Tips & Tricks to Make Ramen Eggs
Tip #1: Cook the marinade
To make the marinade, I highly recommend cooking it for 1 minute after boiling. This ensures the sugar dissolves and the alcohol evaporates, leaving only the natural umami and sweetness in the sauce.
Tip #2: Add vinegar and salt when boiling eggs
If you don’t have a particular method of cooking boiled eggs, try adding vinegar and salt to the boiling water before you add the eggs.
I’ve tried many different approaches and was shocked at the 100% success rate with the vinegar and salt method when peeling eggs. The peels come off perfectly every time.
Have you tried it? Do you use any “trick” to make boiled eggs? Please share your method in the comment below.
Tip #3: Use refrigerated eggs
Using a fine-mesh sieve/strainer, gently lower your eggs straight from the fridge into the (already) boiling water and lower the heat slightly to a simmer.
Tip #4: Cook 7 minutes from the first egg in boiling water
Start setting the timer for 7 minutes from the first egg submerged in boiling water. It takes about 30 seconds or less to submerge all four eggs (set the timer for 6 minutes and 30 seconds if you start the timer when you finish submerging all the eggs. Little adjustment matters!)
I use large American eggs for this recipe, and knowing that egg sizes vary in different parts of the world, you might need to adjust the cooking time slightly.
Tip #5: Shock the eggs in ice water
Shock the boiled eggs in ice water immediately and let them chill for at least 15 minutes. I use the same ice water to dip the boiled eggs a few times when peeling them. Water goes into the gap and helps peel easily.
Tip #6: Marinate the eggs overnight
I prefer that you could marinate the ramen eggs for just a few hours or overnight. I can make ramen the next day while the eggs stay marinated in the fridge, waiting for their appearance.
I’d stop marinating around after two days, or it gets salty. Also, soft-boiled eggs should be consumed in 3-4 days.

How to Serve Ramen Eggs:
I hope you’ll try this recipe because it can make your day better. Here are my absolute favorite ways to enjoy the eggs.
- Serve with Miso Ramen
- Serve with Vegetarian Ramen
- Serve with Tsukemen (Dipipng Ramen Noodles)
- Serve on Avocado Toast
- Serve with Japanese Curry
- Pack in Bento Box
Tableware from Musubi Kiln
I’ve partnered with a great ceramic online shop from Japan called Musubi Kiln. You will get 10% off with a coupon code JUSTONECOOKBOOK for your purchase. In this post, I’ve used:

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Ramen Eggs (Ajitsuke Tamago)
Video
Ingredients
- 4 large eggs (50 g each w/o shell) (refrigerated; use slightly older eggs, which are easier to peel)
Instructions
- Before You Start: Please note that this recipe requires a marination time of 8 hours or overnight. Gather all the ingredients.
To Make the Marinade
- In a small saucepan, combine all the ingredients for the marinade: ¼ cup soy sauce, ¼ cup mirin, ¼ cup sake, and 1 tsp sugar.
- Bring it to a boil and whisk it a few times to let the sugar dissolve completely. Once boiling, lower the heat and simmer for 1 minute. Turn off the heat. Set aside to cool completely.
To Make the Soft-Boiled Eggs
- Add 4 cups (1L) water (for 4 eggs) to a medium saucepan and bring it to a boil. There should be enough water to cover the eggs by at least 1 inch (2.5 cm). Once at a full boil, take out 4 large eggs (50 g each w/o shell) from the refrigerator. Carefully and gently lower one egg at a time into the boiling water with a mesh strainer/skimmer or a ladle. When you add the first egg, set a 7-minute timer. You can cook them 6 to 6½ minutes for a runny egg yolk and 8 to 9 minutes for a custard-like egg yolk.
- Once all the eggs are in the saucepan, lower the heat to maintain a gentle boil. Make sure the water is simmering, but not bubbling so strong that the eggs bounce around. If you want your egg yolks to be centered, gently rotate the eggs with chopsticks once in a while for the first 3 minutes.
- After 7 minutes, immediately take out the eggs and shock them in iced water for 15 minutes.
- Once the eggs are completely cool, gently crack the shell at the wide bottom end of the egg and start peeling it vertically toward the pointy top. Dip the egg in the iced water a few times to help with the peeling. Once you peel one section vertically, the rest of the shell comes off easily.
To Marinate the Eggs
- Place the eggs in a plastic bag and add the marinade to the bag. Why am I recommending a plastic bag? With a plastic bag, we don‘t have to use a lot of marinade to submerge the eggs. This marinade is used only one time for food safety reasons, so it’s most economical to prepare no more than the amount you need. If you use a container instead of a bag, it requires more marinade to submerge the eggs.
- Remove the air from the bag and use a clip or rubber band to seal the bag right above the eggs. This way, the eggs are completely submerged in the marinade. Refrigerate for 8 hours or overnight. You can rotate the eggs occasionally if you like.
To Serve
- Remove the eggs from the marinade and cut them in half lengthwise to serve. Use a piece of string, fishing line, or cheese cutter (that‘s what I used here) to cut the eggs in half cleanly. Enjoy the Ramen Eggs in bento, as a ramen topping, or as a snack sliced in half and sprinkled with furikake (rice seasonings) and shichimi togarashi (Japanese seven spice). If you want to warm up the eggs, soak the bag in warm water to bring up the temperature faster.
To Store
- Keep the Ramen Eggs refrigerated at all times. Do not freeze as the texture of eggs changes when frozen (with the exception of tamagoyaki). The ramen eggs will get saltier the longer they marinate, so take them out from the marinade after 12–24 hours (depending on your preference). Enjoy the ramen eggs within 3–4 days if your eggs are soft-boiled. If your eggs are hard-boiled, you can keep them in the refrigerator for up to a week. For food safety reasons, I do not recommend reusing this marinade with new boiled eggs. You can repurpose this marinade as a seasoning sauce for your stir-fried or simmered dishes but use it soon.
Notes
Nutrition
Editor’s Note: This post was originally published on September 14, 2014. It has been updated with new images, video, and blog content in September 2021.
How long can the finished eggs last at room temperature? I live in Singapore so that’s roughly 26degree Celsius
Hi Wes,
Please keep the eggs in the refrigerator all the time or use an ice pack.
We hope this helps!
I started out following this recipe exactly and the result was great. I have gained some confidence and I do my own variation. I use refrigerated large eggs and I pierce them before submersing them in boiling water for 5-1/2minutes. I then cool them in ice water for about 10minutes. That way they peel easier. I modified your recipe for the marinade by adding 2 TBSP of sake and I use usukuchi soy sauce instead of regular soy sauce for a saltier taste. I marinade the eggs between 1hr ( if I am in a rush) or overnight as you suggest. Since the marinade contains a bit of alcohol ( from the sake and the mirin) I can usually keep it in the fridge for a week, giving me two or three chances to marinade eggs. Thanks for the inspiration.
Hi Ernst-Udo Peters,
Thank you very much for trying this recipe and for sharing your cooking experience and tips with us.☺️
Piercing the eggs is a good trick! The little gadget for piecing the eggs is available in the store, making it easier for many people nowadays. What a great invention!
Quick question, Nami: What are good substitutes for mirin other than non-alcoholic mirin if one of my family is allergic, and is there a way I can make those substitutes from scratch? We don’t live near a World Market, and I’m too young to buy anything online.
Hi EmmaB,
In this case, it can be replaced by water and sugar.
You can read more about substitute for Mirin here; https://www.justonecookbook.com/mirin/
We hope this helps!🙂
Thx!
Great recipe!
Hi Grace!
Thank you very much for your kind feedback!
Hi, is this safe for kids? I saw that mirin is alcoholic, so I wanted to make sure.
Hi Emma,
If you are worried about the Mirin’s alcohol level, the non-alcohol Mirin will be a good choice for you.
You can learn more about Mirin here. https://www.justonecookbook.com/mirin/
We hope this is helpful.🙂
Thank you!
Hi Emma, It’s our pleasure! We hope you like this recipe! 😊
I’d like to gift my friend with a bottle of this wonderful marinade sauce. How long does it stay good in a fridge after making?
Hi Mana,
We are so happy to hear you like this marinade sauce very much.☺️
If that is just the sauce, it can be stored in an airtight container in the fridge for up to one month.
We hope this helps!
I have made these a few times and I ADORE them! Makes such a great snack! I make these all the time! I usually make them following your recipe because it is that good but the last time I made them I made a couple of changes. One was planned and the other was a mistake.
First the mistake: I added a Tbsp of dark mushroom soy sauce. When I pulled the soy sauce from the cabinet I took the mushroom dark soy out and I didn’t pay attention and grabbed the wrong bottle. So I rolled with it so I didn’t waste anything. It worked. Not sure if I would do it on the regular but it’s good to know that it won’t ruin them.
The other change was I used low fat/no salt chicken stock instead of water. The stock added a slight depth of flavor that worked really well with the ramen I had made.
Hi Victoria! Thank you so much for trying this recipe and for your kind and detailed feedback! I’m so happy to hear you enjoyed the recipe and variations! Thanks for sharing your cooking experience with us!
Hello, I stumbled into your website while looking up how to cook Japanese Soft Boil Eggs. A friend of mine gifted me with a bottle of Ninben Shiro Dashi. Can I use this in a substitute for Mirin? I do not know how to cook Japanese recipes and am stuck without knowing what to do with the Ninben Shiro Dashi. Thank you.
Hi Rena! Shiro Dashi is a type of dashi-based soup/stock and it’s concentrated so you have to dilute it. It’s not quite mirin so my answer is no, and this recipe is not the best use… It’s made with white soy sauce, light-colored soy sauce (we call it Usukuchi Soy Sauce), sugar, and mirin, and it’s basically the soup base.
You can use it similar to Mentsuyu (this one is dark one, not Shiro/White dashi). https://www.justonecookbook.com/mentsuyu/
Hope this helps!
Absolutely love how simple this recipe is. Works like a charm and the egg turns out every time! Highly recommend keeping your egg in the fridge. My only question is do you have any suggestions or tips for making large quantities? I need to cook around 30-50 eggs. Thanks
Hi Akash! Thank you so much for your kind feedback! So happy to hear eggs come out well! I’d say just increase the amount of marinade and add all the soft-boiled (if not hard-boiled) eggs in there. 🙂
Love these! Made a fresh batch today for Ramen this evening. The person asking about cooking at high altitude. I boil my water and the eggs come right out of the refrigerator, swirl the water a bit (gently for 2 minutes to center the yolk) and cook for a total of 7:30 minutes then straight to and ice bath. Creamy yolk every time fully cooked whites.
Hi Jennifer! I’m so happy you enjoyed this recipe and thank you for your kind feedback! Thank you so much for sharing your tip on cooking at high altitude!
Can ramen eggs be frozen and reheated? Since they take so long it’d be nice if I could just make a big batch and take one out when needed.
Hi Alex! Unfortunately, egg whites will lose the moisture and it becomes a different texture. 🙁 You can break them into small bits and freeze them but I know that’s not what you want to do… So just refrigerate is the only option. 🙁
Hi Nami
Thank You for sharing your recipes, my family and I have enjoyed them.
These eggs are perfect, I think the next time I will have them with a miso base ramen. Thank You again!
Hi Debbie! I’m so glad you enjoyed this recipe. Thank you for your kind feedback! 🙂
I love making the eggs this way. They are delicious, and reminiscent of the “salty tasty eggs” that I get at the Lawson’s when I go to Okinawa.
I don’t use these eggs with ramen though, so I cook them for nine minutes. Then I can eat them sliced in a salad or just halved as a side dish.
Thanks for the push to use less marinade than others suggest. It really does work out fine.
You have a wonderful website and a very useful cookbook. Thanks for both!
Hi SG! Thank you so much for your kind words! I’m really happy to hear you enjoy this recipe. You don’t have to use it for ramen too. I love these on donburi or even on snack, etc. 🙂 Thank you for your feedback!
I made these eggs yesterday night for dinner and they came out fine even after marinating for just 8 hours. The yolks weren’t as runny but that’s because I only had room temperature eggs so I adjusted by boiling for just 6 mins 30 secs.
I’m not sure if anyone else has asked you this but I would like to know how did you get the yolks to be almost perfectly centered? Most of my yolks were very near to the bottom of the eggs which would most definitely spill out had the yolks been completely runny and if I accidentally peeled some egg white out.
Also, I’m sure I’m not the only person that asks questions about your recipes. Perhaps after you post the recipe and have answered questions from readers, you can add a FAQ section linking to your replies so others who have similar questions will not ask you again?
Hi Jessica! We all learned this in the Japanese home and economics class in elementary school. You gently rotate the eggs with chopsticks once in a while for the first 3 minutes so the egg yolk will be in the center. I’ll add it to my instruction. I never read or hear about this method in American recipes so I thought the detail level is something only Japanese people care about. LOL 🙂
These are so lovely, and easy to make.
I am wondering if this could work with quail eggs. It seems like it will work very nicely, but … I am wondering how long to cook them to get that perfect soft boiled texture. Maybe just 2 or 3 minutes? Nami, any tips will be much appreciated.
Hi Lynn! I’m so glad to hear you enjoyed this recipe! I’m not too sure how long they should be cooked, but I assume 2-3 minutes as well… test one and see if that works? 🙂