Asperges Sauce Mousseline

Nutrition · per serving

Steps

1. 1

   Peel the white asparagus thoroughly from just below the tip to the base, then trim 2-3 cm from the woody ends. This is essential: white asparagus is fibrous, and any peel left behind will stay tough after cooking. Set a wide pan of water on to heat with the salt, sugar, and sliced lemon.

   800 g white asparagus, thick spears1.5 L water10 g fine salt5 g caster sugar1/2, sliced lemon
2. 2

   Melt the butter gently in a small saucepan until fully liquid but not browned. Keep it warm over the lowest heat. In a separate bowl, whisk the egg yolks with the lemon juice and cold water until slightly frothy.

   120 g unsalted butter2 egg yolks20 ml lemon juice15 ml cold water
3. 3

   Place the bowl over a pan of barely simmering water and whisk constantly until the yolks thicken to a light sabayon that forms soft ribbons, about 2-3 minutes. The bowl should feel hot but the eggs must never scramble; if the mixture gets too hot, lift it briefly off the steam.

   2 egg yolks20 ml lemon juice15 ml cold water
4. 4

   Slowly drizzle in the warm melted butter while whisking continuously to form a glossy hollandaise. Season with the fine salt and white pepper. Keep warm in a lukewarm place, not over direct heat, while you finish the asparagus and cream.

   120 g unsalted butter2 g fine salt0.5 g white pepper
5. 5

   Lower the peeled asparagus into the simmering lemon water and cook gently for 8-12 minutes, depending on thickness, until a knife slips into the base with slight resistance and the tips are tender. Avoid a rolling boil, which can break the spears.

   800 g white asparagus, thick spears1.5 L water10 g fine salt5 g caster sugar1/2, sliced lemon
6. 6

   Whip the heavy cream to soft peaks; it should hold shape but still look supple, not stiff. Fold it gently into the warm hollandaise just before serving to create the lighter mousseline texture.

   60 ml heavy cream
7. 7

   Lift the asparagus out carefully and drain well on a clean towel so excess water does not dilute the sauce. Arrange the spears on warm plates, spoon over the sauce mousseline, and finish with chives and a pinch of flaky salt. Serve immediately while the sauce is airy and warm.

   800 g white asparagus, thick spears5 g chives, finely sliced1 g flaky salt

Origin & History

Asperges sauce mousseline is a classic French spring preparation, especially associated with the white asparagus season in regions influenced by both French and broader continental European asparagus traditions. Sauce mousseline is essentially hollandaise lightened with whipped cream, a refinement from the grand French sauce repertoire that gives the dish a more delicate, airy finish.