Sandwich (egg sandwich) | Koh Kentetsu Kitchen

Boil water in a pan, add eggs and boil for 12 to 13 minutes.
After boiling, put it in cold water and peel it.

Divide the egg into yolk and white and slice the white.
Crush the yolks, add (A) and mix.
Add white meat and salt and mix.

Add the mustard to the butter and mix.

Cut off the ears of the bread and apply mustard butter.
Put the filling on it, sandwich it with bread, cut it in half, and you're done.