Photo: ClickCh · CC BY-SA 4.0
Tamago Sando (Egg Sandwich)
A Japanese egg-salad sandwich — boiled eggs folded into mayo and piled into soft milk bread. Famous as a convenience-store staple. Once the eggs are boiled it's just mix and assemble, so anyone can make this creamy, comforting sandwich in 15 minutes.
Ingredients
Steps
- ⏲ 12 min
Hard-boil the eggs 10-12 minutes, cool in cold water, and peel.
- ⏲ 2 min
Mash the eggs with a fork — leave the whites a bit chunky and the yolks fine for the best texture.
- ⏲ 1 min
Fold in the mayo, salt, and pepper (and sugar/mustard) until creamy.
- ⏲ 2 min
Spread a thin layer of butter on the bread (to keep it from going soggy) and pile on the egg salad thickly.
- ⏲ 5 min
Top with another slice, press gently, wrap, and rest 5 minutes to set.
- ⏲ 1 min
Trim the crusts and cut in half (or thirds) to show the filling.
Tips & Variations
Variations
- With a soft egg: Tuck a whole soft-boiled egg in the center for a runny yolk.
- Kewpie style: A little Kewpie mayo and sugar for that konbini flavor.
- Mentaiko/ham: Add spicy cod-roe mayo or ham for more savoriness.
- Press it: Gently pressing and resting gives clean, photogenic cross-sections.
Tips
- Use soft milk bread with the crusts off — it's key to the fluffy texture.
- Butter the bread thinly so the filling's moisture doesn't make it soggy.
- Mash yolks fine but keep some white chunky for contrast.
- Kewpie mayo (with a pinch of sugar) gives the signature rich, slightly sweet taste.
- Wrap and rest before cutting so it holds together in neat slices.
The basics behind this dish
- Eggs: Coagulation Temperatures and What They DecideWhite sets at 62°C, yolk at 68°C. Those two numbers explain scrambled eggs, boiled eggs, steamed custard and crème anglaise all at once.
- Browning and the Maillard ReactionMeat fails to brown for one of three reasons: it is wet, the pan is cool, or you put too much in at once. Plus how the brown film stuck to the pan becomes your sauce.
- Cooking Meat: Temperature, Resting, and Cutting Against the GrainDoneness is a core temperature, not a number of minutes. What resting actually does, how to handle a thick cut, and why the direction you slice changes the texture.
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