Start by cooking your peeled and cubed potatoes in salted water until tender. This usually takes about 15–20 minutes. Make sure they’re soft enough to mash easily for a silky texture.
Once cooked, drain the potatoes and pass them through a potato ricer. This step ensures the potatoes are lump-free and light, giving that signature airy consistency.
Add the unsalted butter, heavy cream, and olive oil to the riced potatoes. Gently fold until fully incorporated. Season with sea salt and white pepper to taste.
Peel and cut the asparagus into 4-inch pieces. Sauté in a very hot pan with a little olive oil until tender but still crisp. This adds a fresh and slightly crunchy contrast.
Heat a non-stick pan and fry the quail eggs sunny-side-up. Their delicate size and richness complement the light, creamy potatoes beautifully.
To serve, spoon a portion of potato mousseline onto each plate. Add three pieces of sautéed asparagus, a sunny-side-up quail egg, and drizzle with veal stock reduction for a gourmet touch.