Step 3
Meanwhile, make the egg sauce, by beating the eggs with the cream, a little salt, grated lemon peel and some drops of lemon juice. Place in a bowl and cook with a bain-marie at 85°C (if the bowl is stainless steel) for 10 minutes, stirring constantly. When it takes on a creamy texture, add the chopped chervil, mix and remove from the water bath.