By Aish Anees Malik: This article is provided for informational purposes and is based on general research and publicly available information. It does not claim personal testing, professional expertise, or guaranteed results.

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Japanese Egg Sandwich Recipe (Tamago Sando) with Kewpie Mayo

A Japanese egg sandwich, also called Tamago Sando, combines soft white bread with a creamy boiled-egg filling. This Japanese egg sandwich recipe uses Kewpie mayonnaise, lightly seasoned eggs, and soft milk bread or shokupan for a simple Japanese-style sandwich that can be served for breakfast, lunch, or a snack.

Quick Answer

A Japanese egg salad sandwich is made by mixing finely chopped or mashed boiled eggs with Japanese mayonnaise and light seasoning, then spreading the filling between slices of soft white bread. Shokupan is commonly used, but another soft white sandwich bread can work when Japanese milk bread is unavailable.

Japanese Egg Sandwich at a Glance

Detail	Information
Also called	Tamago Sando
Main filling	Boiled eggs and Japanese mayonnaise
Bread	Shokupan or soft white bread
Makes	2 sandwiches
Main method	Boil, chop, mix, and assemble
Optional additions	Butter, milk, sugar, mustard, green onion

What Is a Japanese Egg Salad Sandwich?

A Japanese egg salad sandwich is a Japanese-style sandwich made with soft bread and an egg-and-mayonnaise filling. It is commonly called Tamago Sando, with “tamago” referring to egg and “sando” used as a shortened form of sandwich.

The filling is generally simpler than many Western egg salad recipes. Instead of combining the eggs with several crunchy vegetables or strong seasonings, a Japanese style egg salad sandwich usually keeps the focus on eggs, mayonnaise, soft bread, and light seasoning.

Shokupan, or Japanese milk bread, is commonly associated with this type of sandwich. Its soft crumb works well with the egg filling. The crusts may be removed for a softer edge, although this is optional when making the sandwich at home.

Ingredients for Japanese Egg Salad

For two sandwiches, use:

4 large eggs
3 tablespoons Kewpie mayonnaise
1 teaspoon milk, optional
1/4 teaspoon sugar, optional
1/4 teaspoon salt, or adjust to taste
1/8 teaspoon black pepper, or adjust to taste
4 slices shokupan or soft white sandwich bread
2 teaspoons softened butter, optional

The quantities can be adjusted slightly depending on the size of the eggs and how creamy you want the filling.

Eggs

Boiled eggs form the base of the Japanese egg salad. The yolks can be mashed more finely while the whites are chopped into small pieces. This creates a mixture that spreads easily while still retaining some egg texture.

Kewpie Mayonnaise

Kewpie mayonnaise is often used in an egg sando recipe. It is an egg-yolk-based Japanese mayonnaise with a different formulation from many standard mayonnaises.

Regular mayonnaise can also be used if Kewpie is unavailable, although the flavor will not be identical.

Shokupan or Soft White Bread

Shokupan is a soft Japanese bread frequently used for sandwiches. If it is unavailable, choose a fresh white sandwich bread with a soft crumb.

To keep the texture close to a typical Japanese egg sando, avoid heavily toasted or very crusty bread. Removing the crust is optional.

Milk and Sugar

A small amount of milk can loosen a thick egg mixture. Sugar is also optional and should be used in a small quantity if you prefer a slightly sweeter filling.

Neither ingredient needs to be added if you prefer the eggs, mayonnaise, salt, and pepper on their own.

How to Make Japanese Egg Sandwich

The method for this Japanese egg salad recipe is straightforward: cook the eggs, prepare the filling, spread it over soft bread, and assemble the sandwiches.

1. Boil the Eggs

Place the eggs in a saucepan and cover them with water.

Bring the water to a boil, then cook until the whites and yolks are set. Around 9 to 10 minutes is a useful starting point for large eggs, although cooking time can vary with egg size, starting temperature, and method.

Transfer the cooked eggs to cold water. Once they are cool enough to handle, peel them and pat them dry.

2. Prepare the Egg Filling

Cut the peeled eggs in half.

For a smoother Japanese egg mayo recipe, separate the yolks from the whites. Mash the yolks with a fork and chop the whites into small pieces.

You can also chop or mash the whole eggs together if you prefer a quicker method.

Creamy Japanese egg salad filling with chopped eggs and mayonnaise

3. Add the Mayonnaise and Seasoning

Add Kewpie mayonnaise to the eggs and mix until combined.

Stir in salt and black pepper. Add the optional sugar and milk if using.

Check the consistency before adding additional mayonnaise. The filling should spread across the bread without becoming runny.

If the mixture is too thick, add a small amount of mayonnaise or milk. If it becomes too loose, adding more mayonnaise will not fix the problem, so liquids are better added gradually.

4. Prepare the Bread

Lay four slices of shokupan or soft white bread on a clean work surface.

If using butter, spread a thin layer over the inside of each slice.

You can leave the crusts on or trim them away. A sharp serrated bread knife (paid link) can be used for trimming and slicing without pressing heavily on the soft bread.

Japanese egg sandwich being assembled with creamy egg salad filling

5. Assemble the Sandwiches

Divide the egg salad between two slices of bread.

Spread the filling in an even layer rather than placing all of it in the center. Top each with another slice of bread.

Press very lightly to settle the sandwich without flattening the bread.

Cut each sandwich in half or into smaller portions before serving.

How to Get the Texture You Want

There is no need to turn the eggs into a completely smooth paste.

For a smoother filling, mash the yolks thoroughly and chop the whites very finely. For more texture, leave the whites slightly larger.

The amount of mayonnaise also changes the consistency. Adding it gradually gives you more control than adding the full amount immediately.

Soft bread matters as well. A firm or heavily toasted bread creates a noticeably different sandwich, while fresh white bread keeps the focus on the egg filling.

These are preparation choices rather than strict rules, so the final texture can be adjusted to preference.

Kewpie Mayo vs Regular Mayonnaise

You do not have to use Kewpie mayonnaise to make an egg sandwich.

Kewpie is commonly used in Japanese-style egg sandwich recipes, while regular mayonnaise provides a practical substitute when Japanese mayonnaise is unavailable.

Because different mayonnaise products have different ingredient formulations and seasoning levels, taste the filling before adding extra salt, sugar, vinegar, or other seasoning.

The choice between the two is mainly about availability and personal preference rather than a requirement for making the sandwich.

What Bread Can You Use?

Shokupan is the most relevant choice when you want the soft-bread style associated with Tamago Sando.

Other options include:

Soft white sandwich bread
Milk bread
Homemade soft sandwich bread
Soft brioche with a mild flavor

Whole-grain, sourdough, or toasted bread can also hold egg salad, but the result will be different from a typical soft egg sandwich Japanese style.

The bread does not need to be a specific brand.

Japanese egg sandwich variations with cucumber, green onion and spicy egg salad

Simple Japanese Egg Salad Variations

The basic filling can be kept to eggs, mayonnaise, salt, and pepper. Optional ingredients can be added in small quantities when you want a different flavor or texture.

Green Onion

Finely chopped green onion can be mixed into the egg salad for additional flavor. Keep the pieces small so they distribute throughout the filling.

Mustard

A small amount of mustard adds sharper flavor. This creates a variation rather than being necessary for a basic Japanese egg salad sandwich.

Cucumber

Thin cucumber slices can be added between the egg filling and bread. Pat them dry before assembling the sandwich to limit additional moisture.

Spicy Mayo

A small amount of chili sauce can be mixed with the mayonnaise for a spicy variation.

Cheese

A mild cheese slice can be added if you want an egg-and-cheese sandwich. This is an optional variation rather than a required part of Tamago Sando.

Keeping these additions optional makes the article more useful without presenting one variation as the only correct version.

Japanese egg sandwich served with cabbage salad and iced coffee

What to Serve with a Japanese Egg Sandwich

A Japanese egg sandwich can be served on its own or alongside simple foods such as fruit, salad, soup, pickles, or vegetables.

For breakfast, coffee or tea can be served alongside it. If you want a simple cold coffee option, try this iced coffee with instant coffee.

For lunch, something crisp can provide a contrast to the soft sandwich. This easy cabbage crunch salad is one option if you want a separate vegetable side.

For another egg-based breakfast idea, see this high-protein spinach egg bake with cottage cheese.

These are serving options rather than required parts of the Japanese egg sandwich recipe.

How to Store Japanese Egg Salad

Egg salad is a perishable food and should be refrigerated promptly in a covered container.

Refrigerated egg salad can generally be stored for 3 to 4 days at 40°F (4°C) or below. Perishable foods should not remain at room temperature for more than 2 hours, or more than 1 hour when the temperature is above 90°F (32°C).

For texture, it is usually more practical to refrigerate the egg filling separately and assemble the sandwich closer to serving. Soft bread can absorb moisture from the filling during storage.

An airtight food-storage container can be used to keep the prepared egg filling covered in the refrigerator.

When packing the sandwich for work, school, or a picnic, keep it properly chilled rather than relying on appearance or smell to determine food safety.

Common Preparation Problems

Filling Is Too Loose

Too much mayonnaise or added liquid can make the filling difficult to keep inside the bread.

Add mayonnaise and milk gradually rather than all at once.

Filling Is Too Dry

A dry filling may need a small additional amount of mayonnaise. Add it gradually and mix before deciding whether more is necessary.

Bread Becomes Soggy

Wet vegetables or a very loose filling can add moisture to the bread.

Dry any cucumber or lettuce before using it, and avoid assembling the sandwich much earlier than necessary.

Filling Comes Out While Cutting

Spread the filling evenly and use a sharp knife without pressing heavily on the sandwich.

A short period of refrigeration before cutting can also make a soft filling easier to handle.

Frequently Asked Questions

What is Japanese egg salad?

Japanese egg salad generally refers to an egg-and-mayonnaise mixture used in Japanese-style sandwiches such as Tamago Sando. The filling is usually lightly seasoned and paired with soft white bread.

What is a Japanese egg sandwich called?

A Japanese egg sandwich is commonly called Tamago Sando.

Is Tamago Sando the same as a Japanese egg salad sandwich?

Tamago Sando can refer to Japanese egg sandwiches in different forms, but the egg-salad-filled version is one familiar style. Recipes can vary in egg texture, seasoning, bread, and presentation.

Can I make Japanese egg salad without Kewpie mayo?

Yes. Regular mayonnaise can be substituted when Kewpie is unavailable. Because mayonnaise products vary in flavor and seasoning, adjust salt and other additions after mixing.

What is the difference between Japanese egg salad and regular egg salad?

There is no single formula for either version. Japanese-style egg salad used for Tamago Sando is commonly kept relatively simple and served on soft white bread, while many other egg salad recipes may include ingredients such as celery, onion, relish, herbs, or mustard.

What bread is used for Japanese egg sandwiches?

Shokupan, a soft Japanese bread, is commonly associated with Japanese egg sandwiches. Soft white sandwich bread is a practical substitute.

Can I toast the bread?

You can, but toasted bread changes the soft texture associated with this style of sandwich. If your goal is a soft Japanese-style egg sandwich, use the bread untoasted.

Can Japanese egg salad be made ahead?

The egg filling can be prepared ahead and refrigerated. For bread texture, assemble the sandwich closer to the time you plan to serve it.

How long can egg salad stay in the refrigerator?

FoodSafety.gov lists 3 to 4 days for egg salad stored in a refrigerator maintained at 40°F (4°C) or below.

How do you make a Japanese egg sandwich creamy without making it runny?

Mash the yolks, chop the whites into small pieces, and add mayonnaise gradually. Optional milk should also be added in a small quantity because excess liquid can make the filling loose.

Final Notes

This Japanese egg sandwich recipe focuses on the basic elements of Tamago Sando: boiled eggs, mayonnaise, light seasoning, and soft bread. The filling texture, amount of mayonnaise, crust removal, and optional additions can all be adjusted to preference.