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    The Heirloom Pantry » Recipes » Eggs

    Ajitama (Soft-Boiled Ramen Eggs)

    Published: Sep 20, 2022 · Modified: Jan 19, 2024 by Kathleen Higashiyama · The following content may contain paid links. When you click and shop the links, we receive a commission.

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    Ajitama (soft-boiled ramen egg) Pinterest pin.

    Ajitama, also known as ramen eggs or ajitsuke tamago, are soft-boiled eggs marinated overnight in a soy sauce mixture. Ramen eggs have a rich umami flavor and are a quintessential ramen topping or snack.

    Ajitama (soft-boiled ramen egg) in a bowl of ramen noodle soup with scallions.

    Ajitama is one of the most popular ramen toppings. They have a silky egg white, soft buttery yolk, and almost teriyaki-like flavor. To make these restaurant-worthy marinated ramen eggs, all you need are 4 ingredients for the sauce, eggs, and a few minutes to prepare the recipe.

    We love to eat ajitama as a snack or in a "mega bite" with ramen noodles and a little bit of every other toppings. While these eggs are delicious as a ramen topping, they are also perfect with breakfast fried rice, a breakfast rice bowl, or in a Japanese egg salad sandwich.

    Jump to:
    • What is Ajitama?
    • Ingredients
    • Substitutions
    • Variations
    • How to Make Ramen Eggs
    • Cooking Tips
    • How to Enjoy Ajitama Eggs
    • Ramen Eggs FAQs
    • Equipment
    • Storage
    • Related Recipes
    • Did You Like This Recipe?
    • 📖 Recipe

    What is Ajitama?

    Ajitsuke Tamago, or Ajitama for short, are marinated soft boiled eggs. They have a unique umami flavor, a jammy texture, and are a quintessential addition to ramen. But they can also be enjoyed as a delicious side or in a sandwich or salad.

    Ingredients

    Ingredients to make ajitama ramen eggs, including eggs, brown sugar, mirin, sake, and soy sauce.
    • Fresh Large Eggs - Eggs are an excellent source of protein. We use pasture-raised eggs because they are have a delicious flavor. They also contain more vitamins and omega-3 fats than cage-raised eggs.
    • Soy sauce - Soy sauce, or shoyu in Japanese, is an essential condiment in Japanese cooking and adds a rich umami flavor to the sauce. We use low sodium shoyu because it is healthier without sacrificing flavor.
    • Mirin - Mirin is a Japanese sweet rice wine that adds umami flavor and is the base of of many Japanese sauces.
    • Sake -  Sake adds savoriness to the sauce.
    • Brown sugar - Brown sugar provides a rich sweetness.

    See recipe card for quantities.

    Substitutions

    • Soft boiled jammy egg - Soft boiled jammy eggs have a similar texture to ajitama eggs but are not as richly flavored.
    • Gluten-free - Use gluten-free soy sauce or tamari to make this recipe gluten-free.
    • Granulated sugar - Use granulated sugar, coconut sugar, or another sugar of your choice instead of brown sugar.
    • Store-bought teriyaki marinade - If you don't feel like making the marinade yourself, you can use store-bought teriyaki sauce and it will still be tasty. Although, our method is tastier and more economical.

    Variations

    • Spicy - Add red pepper flakes while to imbue heat to the sauce and eggs.
    • Bonito flakes - Add bonito flakes to the marinade for extra umami flavor.
    • Hard boiled eggs - You can also make hard boiled eggs by boiling the eggs for an extra 2 minutes (10 minutes total).
    • Garlic - Minced garlic or garlic powder adds a pungent aroma to the eggs.
    • Fresh ginger - Add fresh grated ginger for a slightly peppery and pungent flavor.

    How to Make Ramen Eggs

    Steps to make ajitama ramen eggs, including boiling the eggs for 8 minutes, chilling the eggs, removing the shell, making the sauce, and pouring the sauce into a bag for the eggs.
    • Boil the water - Fill a saucepan or small pot with water. Bring the water to a boil on medium heat. Use tongs or a slotted spoon to gently lower the eggs in the boiling water and cook for 8 minutes until soft boiled. Lower the heat so that the water simmers. Set a timer to be exact. (Photo 1)
    • Cool the eggs - Once the timer pings and you finish the cooking process, use the tongs or spoon to transfer the eggs from the pot to a bowl of iced water. Let the eggs cool in the ice bath for 5 minutes before you peel them. (Photo 2)
    • Crack the eggshells - Using a spoon, lightly tap each egg to crack the shell. The shell should easily peel off once the egg is cooled. (Photo 2)
    • Make sauce - Add soy sauce, mirin, sake, and brown sugar to a mixing bowl and mix until incorporated. Set aside. Pour the soy sauce mixture into a resealable plastic bag. (Photo 3 and 4)
    Steps to make ajitama ramen eggs, including marinating the eggs, chilling the eggs overnight, and slicing the marinated eggs.
    • Add eggs to sauce - Place the eggs inside the bag of sauce. Push the air out of the bag so the eggs are well covered in the sauce to marinate. (Photo 5 and 6)
    • Marinate - Marinate the eggs in the refrigerator for at least 8 hours or overnight. When ready to enjoy, wet a knife to slice the eggs in half and serve. (Photo 7 and 8)

    Cooking Tips

    • Make sure to let the eggs cool in the ice water before peeling them. This makes the eggs easier to peel.
    • Cut the eggs with a wet knife to help prevent the yolks from sticking to the knife.
    • Make ahead of time - We often make these the night before we plan to eat them and let them marinade overnight. This way we can streamline the ramen process and don't have to make the eggs a few hours before we eat them.
    • Make sure the eggs are at room temperature - One of the most important things to note about boiling eggs is that the eggs need to be at room temperature before you boil them. If the eggs are cold and right out of the fridge, they will crack when lowered into the hot water. If you don't have time to let your eggs get to room temperature on their own, fill a bowl with warm water (not hot) and let them sit in the water for a few minutes to expedite the temperature change.

    How to Enjoy Ajitama Eggs

    There are a ton of ways enjoy these perfect soft boiled eggs. Our favorite way is in a bowl of hot ramen. However, they are also delicious in kimchi fried rice or a bacon breakfast rice bowl. They are even delicious over toast with fresh cracked pepper and Maldon Sea Salt Flakes.

    Ramen Eggs FAQs

    Are ramen eggs fully cooked?

    Yes, these eggs are soft boiled then we refrigerate and marinate them for 8 hours.

    Why are ramen eggs so good?

    Soft boiled eggs are already delicious, but the marinade takes the eggs to another level. The eggs absorb the marinade to create a uniquely savory and sweet flavor when combined with ramen.

    Why are ramen eggs brown?

    The marinade turns them light brown.

    Is Ajitama vegetarian?

    Yes, this Ajitama recipe is vegetarian. However, some other recipes may use animal stock or bonito flakes (dried fish flakes).

    How do you eat ramen with egg?

    The best way to enjoy ramen with egg is a megabite. We love to combine some egg, some noodles and a little bit of meat into one uber delicious bite.

    What is the difference between Ajitama and Onsen Egg?

    Ajitama eggs are boiled and then marinated while onsen eggs are slow cooked at a lower temperature.

    Equipment

    This easy ramen egg recipe calls for just a few common kitchen essentials. For the eggs, you will need tongs or a slotted spoon, a pot to boil the eggs, a knife, and a cutting board. For the marinade, you will need measuring spoons, a small saucepan, whisk or silicone baking spatula, and a jar or container for storage.

    Storage

    You can marinate these ramen eggs in the refrigerator in an air tight container for 3 days. Here are some containers we recommend: OXO Pop Containers, Glass Meal Prep Containers, Glass Food Containers. When you are ready to enjoy the eggs, you don't need to reheat them, just drop them straight into the hot ramen.

    If you have leftover marinade, store it in an air-tight container or lidded jar for up to 2 weeks. You can use it for salmon, chicken, and veggies. Before using it again, stir it softly until it reaches its original consistency. You can also freeze it for a few months. Just be sure to store it in the correct container (not a lidded glass jar, which can break in the freezer). When you are ready to enjoy it again, let it thaw.

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    Did You Like This Recipe?

    Love this ajitama recipe? Please leave a 5-star rating in the recipe card & consider leaving a comment below. Thanks!

    Sign up for THP's newsletter and keep in touch on Instagram, Facebook, Pinterest, TikTok, and YouTube. If you make this ramen eggs recipe, tag #theheirloompantry so we can see your homemade ajitama!

    📖 Recipe

    Ajitama (soft-boiled ramen egg) in a bowl of ramen noodle soup with scallions.
    Print Recipe Pin Recipe
    5 from 3 votes

    Ajitama (Soft Boiled Ramen Eggs)

    Ajitama, also known as ramen eggs or ajitsuke tamago, are soft-boiled eggs marinated overnight in a soy sauce mixture. Ramen eggs have a rich umami flavor and are a quintessential ramen topping or snack.
    Prep Time10 minutes mins
    Cook Time8 minutes mins
    Marinate time8 hours hrs
    Total Time8 hours hrs 18 minutes mins
    Course: Side Dish, Sides
    Cuisine: Japanese
    Servings: 4
    Calories: 139kcal
    Author: Kathleen Higashiyama

    Equipment

    • 1 Tongs
    • 1 pot
    • 1 knife
    • 1 cutting board
    • 1 Measuring spoons
    • 1 saucepan
    • 1 whisk
    • 1 Lidded jar

    Ingredients 

    • 4 eggs
    • 3 tablespoon soy sauce
    • 4 tablespoon mirin
    • 4 tablespoon sake
    • 2 tablespoon brown sugar
    Prevent your screen from going dark

    Instructions

    • Boil the water and eggs - Fill a saucepan or small pot with water.  Bring the water to a boil on medium heat. Use tongs or a slotted spoon to carefully lower the eggs in the water and cook for 8 minutes. Lower the heat so that the water simmers. Set a timer to be exact.
      4 eggs
    • Fill a bowl with ice water - As the eggs cook on the stovetop, fill a bowl with cold water and ice. The bowl of ice water will stop the eggs from cooking and will preserve the soft yolk.
    • Cool the eggs - Once the timer pings, use the tongs or spoon to transfer the eggs from the pot to the bowl of ice water. Let the eggs cool in the ice water for 5 minutes before you peel them.
    • Make sauce - While the eggs cool, make the marinade. Add soy sauce, mirin, sake, and brown sugar to a mixing bowl and mix until incorporated. Set aside.
      3 tablespoon soy sauce, 4 tablespoon mirin, 4 tablespoon sake, 2 tablespoon brown sugar
    • Crack the eggshells - Using a spoon, lightly tap each egg to crack the shell. The shell should easily peel off once the egg is cooled. Pour the soy sauce mixture into a resealable bag and place the eggs inside. Push the air out of the bag so the eggs are well covered in the sauce to marinate.
    • Marinate - Marinate the eggs in the refrigerator for at least 8 hours or overnight. When ready to enjoy, wet a knife to slice the eggs in half and serve.

    Video

    Notes

    Top Tips
    • Make sure the eggs are at room temperature -  If the eggs are cold and right out of the fridge, they will crack when lowered into the hot water.
    • Use a wet knife - Cut the eggs with a wet knife to help prevent the yolks from sticking to the knife
    • Make ahead of time - We often make these the night before we plan to enjoy them so we can streamline the ramen process.

    Nutrition

    Calories: 139kcal | Carbohydrates: 15g | Protein: 7g | Fat: 4g | Saturated Fat: 1g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 2g | Trans Fat: 0.02g | Cholesterol: 164mg | Sodium: 949mg | Potassium: 101mg | Fiber: 0.1g | Sugar: 10g | Vitamin A: 238IU | Calcium: 33mg | Iron: 1mg
    Tried this recipe?Mention @theheirloompantry or tag #theheirloompantry!

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    About the Author

    Kat Higashiyama and Alec Totto are recipe developers, food photographers, and the authors behind The Heirloom Pantry. Since 2017, they have shared recipes inspired by their Japanese and Italian heritage and California and Hawaii roots. They reside in San Jose with their two dogs, Peeps and Paisley. Read More…

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    Alec and Kat with Paisley and Peeps on the beach

    We're Kat and Alec, the culinary duo behind The Heirloom Pantry, where family recipes from our Italian and Japanese heritage meet fresh California ingredients and Hawaiian sunshine. Our chef-tested dishes help you conquer weeknights and wow guests with effortless entertaining. Join us on this delicious journey – let's cook up confidence, together!

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