Cut the brown edges of Your slice bread,set aside.

Then in another plate,cut Your tomatoes into round shape,so also your onion cut into round shape, including cucumber.

In another bowl,add Your mayonnaise,sprinkle black pepper,chili flakes with some little seasoning,add Your mashed sardines,don't include the oil.them mix them thoroughly.

Bring your slice bread and put the mixture of mayonnaise on it,add sliced cucumber,tomatoes and onion then cover with another sliced bread,cut into diagonal and serve with tea or drink.