This recipe crafts the quintessential Japanese Egg Salad Sandwich, or Tamago Sando. It features perfectly cooked, mashed eggs mixed with rich Kewpie mayonnaise and seasoned simply, all nestled between slices of incredibly soft, crustless white bread. The result is a delightfully creamy, subtly sweet, and savory sandwich renowned for its delicate texture and comforting flavor, perfect as a snack or light meal.
Achieving the perfect texture for the egg salad is key. Boil eggs until just set, around 7-8 minutes for a slightly jammy yolk, then shock in ice water to stop cooking and aid peeling. For the salad, don't over-mash; aim for a mix of creamy and slightly chunky textures. Kewpie mayo is non-negotiable for authentic flavor due to its richness and umami from egg yolks and a touch of rice vinegar. Adjust the amount to your preferred creaminess. The bread is equally important: use a very soft, fluffy white bread, ideally Japanese milk bread (shokupan), with crusts meticulously trimmed for that signature elegant presentation and uniform soft bite. A light seasoning of salt is usually enough, but a tiny pinch of sugar can enhance the overall balance.