Japan’s 7-Eleven sells a sandwich so perfect it has a cult following. It’s called tamago sando—egg sandwich. Sounds simple. Tastes like a hug. The secret? Creamy, almost sweet egg salad tucked inside impossibly fluffy Japanese milk bread with the crusts cut off.
This isn’t your chunky, mustard-y egg salad. It’s smooth, rich, and custard-like thanks to Kewpie mayo and a touch of mirin. One bite and you’ll be booking a flight. Or just making another batch.
Step-by-Step Instructions
Boil the Eggs
Place eggs in a pot and cover with cold water. Bring to a boil, then turn off heat and cover for 10 minutes.
Transfer to an ice bath. Peel carefully.
Make the Egg Salad
Cut eggs in half. Separate yolks from whites.
Mash yolks with Kewpie mayo, sugar, salt, and mirin until smooth and creamy.
Chop whites into small pieces (not too fine). Fold into yolk mixture. Keep some texture.
Assemble the Sando
Trim crusts off the milk bread (authentic and necessary).
Spread a thin layer of butter on each slice.
Pile egg salad generously onto two slices. Top with the remaining bread.
Wrap and Press (The Secret Step)
Wrap each sandwich tightly in plastic wrap. Let sit for 10-15 minutes at room temperature.
Slice in half with a sharp knife (plastic wrap still on) for clean edges.
Serve
Unwrap and eat immediately. Or refrigerate for up to a few hours—it’s designed to be eaten cool.
Summary
Prep Time: 10 minutes | Cook Time: 10 minutes | Total Time: 20 minutes (plus resting)
Yield: 2 sandwiches
Difficulty: Easy
Storage Notes
How to Store:
Keep wrapped in plastic in the fridge for up to 24 hours. The resting time actually helps the flavors meld. Do not freeze—texture will suffer.
No Milk Bread?
Use soft white bread like shokupan’s cousin, brioche, or even regular sandwich bread. Trim the crusts. It won’t be perfect, but it’ll be close.
