Preparation time: under 10 minutes
Marinating time: 30 minutes
Cooking time: None

To make the recipe for 4 people, for the mousse mayo double the quantity of oil and lemon only.

For a simpler version, used purchased gravlax.

Salmon

1. Lay the salmon slices flat on a large plate without overlapping.
2. Drizzle with lemon juice and oil.
3. Sprinkle with coarse salt and dill.
4. Marinate 30 minutes.

Mousse mayo

1. Make the mayonnaise: whisk the mustard into the egg yolk, then slowly and gradually whisk in the oil to emulsify.
2. Grate the lemon to obtain 1/2 tsp. fine zest. Halve the lemon and juice one half.
3. Add the lemon juice and zest to the mayonnaise. Season with pepper to taste.
4. Beat the egg white to stiff peaks.
5. Gently fold the beaten egg white into the mayonnaise. Refrigerate until serving time.