Kalix löjrom (whitefish roe)

Instructions

1. Slice the red onion very finely and soak it in cold water for 5 minutes, then drain and dry it.
2. In a small bowl, whisk the crème fraîche with the lemon juice and a little pepper until smooth.
3. Gently fold half the onion and half the chives into the cream.
4. Toast the bread slices, then cut them into triangles or squares.
5. Spread the cream on each toast, then place a spoonful of very cold löjrom in the centre.
6. Garnish with the rest of the onion and chives and serve immediately.