What is a liaison and when is it used in sauce finishing?

What is a liaison and when is it used in sauce finishing?

• A. A mixture of egg yolks and cream added off the heat to finish and thicken some sauces.
• B. Butter whisked into sauce off heat.
• C. A reduction of wine added at end.
• D. Roux added during simmer.

Answer: (A)

A liaison is a finishing technique that uses a mixture of egg yolks and cream to enrich and lightly thicken sauces. It’s added off the heat and whisked in to prevent the yolks from curdling, then heated gently just enough to give the sauce a smooth, silkier texture. This approach provides body and richness without relying on more roux-based thickening. It’s commonly used to finish sauces that began as velouté or similar bases, where you want a refined, glossy finish. Finishing with butter off heat is a different method for gloss and richness, a wine reduction concentrates flavor, and a roux thickens during simmer—none of which achieves the same custard-like smoothness that a liaison delivers.

A liaison is a finishing technique that uses a mixture of egg yolks and cream to enrich and lightly thicken sauces. It’s added off the heat and whisked in to prevent the yolks from curdling, then heated gently just enough to give the sauce a smooth, silkier texture. This approach provides body and richness without relying on more roux-based thickening. It’s commonly used to finish sauces that began as velouté or similar bases, where you want a refined, glossy finish. Finishing with butter off heat is a different method for gloss and richness, a wine reduction concentrates flavor, and a roux thickens during simmer—none of which achieves the same custard-like smoothness that a liaison delivers.