Irresistible Egg Sandwiches (Tamago Sando) with Japanese Mayo
Irresistible Egg Sandwiches (Tamago Sando) with Japanese Mayo is a easy Japanese recipe that serves 2. 250 calories per serving. Recipe by Morgane Recipes on YouTube.
Prep: 45 min | Cook: 12 min | Total: 1 hr 7 min
Cost: $10.39 total, $5.20 per serving
Ingredients
- 1 large Whole Egg (room temperature, used whole for lighter mayo)
- 1 tablespoon Mirin (adds gentle sweetness and umami)
- 1 tablespoon White Rice Vinegar (mild acidity; can substitute lemon juice or apple cider vinegar)
- 0.5 teaspoon Salt (regular table salt)
- 1 cup Vegetable Oil (neutral oil such as canola or sunflower)
- 6 large Eggs (hard boiled, cooled, peeled)
- 0.5 tablespoon Sugar (balances acidity of mayo)
- 1 pinch Black Pepper (freshly ground)
- 4 slices Soft White Sandwich Bread (thick slices; preferably Japanese milk bread or homemade)
- 3 tablespoons Japanese Mayonnaise (homemade) (prepared earlier, chilled)
Instructions
Prepare Japanese Mayonnaise
In a tall container combine 1 whole egg, 1 tbsp mirin, 1 tbsp white rice vinegar, and 0.5 tsp salt. Blend a few seconds, then slowly drizzle in 1 cup vegetable oil while blending until the mixture thickens and holds its shape.
Time: PT5M
Chill Mayonnaise
Transfer the mayo to a clean jar, cover tightly, and refrigerate until firm (at least 30 minutes).
Time: PT10M
Hard‑Boil Eggs
Place six eggs in a saucepan, cover with cold water, and bring to a boil over high heat. Once boiling, reduce heat to maintain a gentle boil and cook for 10 minutes.
Time: PT12M
Temperature: 100°C
Cool and Peel Eggs
Immediately transfer the boiled eggs to a bowl of ice water and let sit for 10 minutes. Peel the eggs by tapping and rolling gently to loosen the shell.
Time: PT10M
Mix Egg Filling
Separate yolks from whites. Mash the yolks very finely with a fork. Cut the whites into small pieces. Combine yolks, whites, 0.5 tbsp sugar, 0.5 tsp salt, a pinch of black pepper, and 3 tbsp chilled Japanese mayo. Mix until smooth and evenly combined.
Time: PT7M
Prep Bread
Spread a thin layer of Japanese mayo on each of the four bread slices. This creates a moisture barrier.
Time: PT2M
Assemble Tamago Sando
On a mayo‑coated slice, spread a generous amount of the egg filling. Top with another slice, press gently (do not squash). Trim crusts if desired, wrap tightly in plastic wrap, and refrigerate for 15 minutes to set.
Time: PT5M
Serve or Store
Cut each sandwich in half and serve immediately, or keep wrapped in the refrigerator for up to 24 hours.
Time: PT1M
Nutrition Facts
- Calories
- 250
- Protein
- 12g
- Carbohydrates
- 30g
- Fat
- 12g
- Fiber
- 1g
Dietary info: Vegetarian, Contains gluten, Contains eggs
Allergens: Eggs, Wheat, Soy (if vegetable oil is soy‑based)
Ingredient Substitutions
- Instead of Whole Egg: Egg yolk only for richer mayo
- Instead of Mirin: Dry sherry, Sweet rice wine
- Instead of White Rice Vinegar: Lemon juice, Apple cider vinegar
- Instead of Vegetable Oil: Light olive oil
- Instead of Sugar: Honey (use less)
- Instead of Soft White Sandwich Bread: Soft sandwich rolls
- Instead of Japanese Mayonnaise (homemade): Store-bought Kewpie mayo
Equipment Needed
- Immersion Blender
- Tall Mixing Container
- Saucepan
- Bowl for Ice Water
- Fork
- Knife
- Cutting Board
- Spatula
- Plastic Wrap
- Refrigerator
Critical Steps — Do Not Skip
- Emulsify the Japanese mayonnaise correctly
- Hard‑boil eggs to the right doneness
- Cool eggs quickly for easy peeling
- Finely mash yolks for a smooth filling
- Chill assembled sandwiches to set the filling
Chef Tips from the Video
- Use Japanese milk bread for the authentic ultra‑soft texture.
- Add a tiny pinch of mustard to the mayo for extra depth if you like.
- Lightly toast the bread if you prefer a subtle crunch.
- Taste the filling before assembling; a dash more sugar balances the vinegar.
Troubleshooting
Mayonnaise separates or looks watery.
Stop blending, add a teaspoon of warm water and blend again, or start with a fresh egg and add the oil even more slowly.
Eggs are rubbery or overcooked.
Reduce the boiling time to 9 minutes and plunge into ice water immediately to stop cooking.
Storage
Refrigerator: Sandwiches keep in an airtight container for up to 24 hours; homemade mayo lasts 2 days.
Freezer: Not recommended – texture of bread and mayo may change.
Room temperature: Do not leave at room temperature for more than 2 hours.
Make-Ahead Tips
- Prepare the Japanese mayo up to 2 days ahead and store refrigerated.
- Assemble the sandwiches, wrap tightly, and chill for 15 minutes before slicing for cleaner cuts.
- Store wrapped sandwiches in the fridge; they stay fresh for up to 24 hours.
Frequently Asked Questions
What is the cultural significance and history of Tamago Sando in Japanese cuisine?
Tamago sando, or egg sandwich, became popular in post‑war Japan as a convenient, protein‑rich snack for schoolchildren and office workers. Its soft milk bread and creamy egg filling reflect Japan’s love for gentle textures and subtle flavors.
What are the traditional regional variations of Tamago Sando in Japan?
While the classic version uses plain boiled eggs, some regions add Japanese mustard, shredded nori, or a hint of curry powder. In Osaka, a sweeter mayo with extra mirin is common, whereas in Tokyo the mayo is kept more neutral.
How is Tamago Sando traditionally served in Japan?
It is usually served as a packed lunch (bento) or sold at convenience stores, sliced into halves with the crusts trimmed off. The sandwich is often wrapped in cling film to keep it fresh and easy to eat on the go.
What occasions or celebrations is Tamago Sando associated with in Japanese culture?
Tamago sando is a staple for school lunches, picnics, and as a quick snack during festivals. It’s also a popular item in bento boxes for family outings and corporate meetings.
What authentic ingredients are essential for a traditional Japanese Tamago Sando?
Key ingredients are soft Japanese milk bread, whole eggs, and Japanese mayonnaise (often Kewpie). Mirin and rice vinegar give the mayo its characteristic sweet‑sour balance.
What other Japanese dishes pair well with Tamago Sando?
Tamago sando pairs nicely with miso soup, pickled vegetables (tsukemono), and a side of onigiri. It also complements a cold green tea or a light fruit salad for a balanced meal.
What makes Tamago Sando special compared to other egg sandwiches?
The use of ultra‑soft milk bread, a creamy Japanese mayo binder, and the contrast of finely mashed yolks with chunky egg whites give it a uniquely smooth yet textured bite that’s distinct to Japanese cuisine.
What are the most common mistakes to avoid when making Tamago Sando?
Common errors include adding oil too quickly to the mayo (causing separation), over‑cooking the eggs (making them rubbery), and not chilling the assembled sandwich, which leads to a soggy bread and messy slices.
Why does this Tamago Sando recipe use a whole egg for the mayonnaise instead of just yolks?
Using the whole egg creates a lighter, airier emulsion that mimics the commercial Japanese mayo texture, while still providing enough fat to bind the egg filling without becoming overly rich.
Can I make Tamago Sando ahead of time and how should I store it?
Yes. Prepare the Japanese mayo up to two days in advance, assemble the sandwiches, wrap tightly in plastic, and refrigerate. They stay fresh for up to 24 hours and are perfect for bento boxes.
What does the YouTube channel Morgane Recipes specialize in?
Morgane Recipes focuses on home‑cooked comfort foods from around the world, offering clear step‑by‑step tutorials that emphasize simple techniques and accessible ingredients for everyday cooks.
How does the YouTube channel Morgane Recipes' approach to Japanese cooking differ from other Japanese cooking channels?
Morgane Recipes blends Japanese recipes with a Western home‑cooking perspective, simplifying traditional techniques (like making Japanese mayo from scratch) while still respecting authentic flavors, unlike some channels that rely heavily on specialty equipment.
Last updated: September 6, 2026
