Fish With Grapefruit

Preparation:

Preparation: Cut the fish into very small cubes and place them in a bowl. Separately, emulsify the lemon juice with 2 teaspoons of mustard, 40 cl of oil, salt and pepper. Pour the sauce over the fish and marinate in the fridge for at least 1 hour. Transfer fish to serving platter. Peel the grapefruit slice by slice and add them to the fish together with the chives and chopped chilli pepper. Serve chilled but not cold.