Sabayon (Warm Emulsion)

What It Is

A warm emulsion of egg yolks whisked with wine (and here oyster liquor) over gentle heat until thick and foamy, then enriched with melted butter — a savoury cousin of zabaglione and a relative of hollandaise.

Why It Matters

The aerated yolk gives a light, glossy blanket that puffs and gilds under the grill where a heavy cream sauce would just sit. The emulsified butter carries richness without splitting if the heat is controlled.

How to Execute

• Whisk yolks + wine + a little reserved shellfish liquor over a bain-marie (or Thermomix at 80 °C, speed 4) until thick enough to coat a spoon and hold a ribbon.
• Off the heat, stream in melted butter while whisking until smooth, glossy and pale — no butter streaks.
• Sharpen with a few drops of lemon and season. Use straight away; it won't hold long.

Common Mistakes

• Too much heat — scrambled yolks.
• Adding butter too fast — it splits.
• Making it ahead; sabayon is a last-minute sauce.