Bearnaise
Produce a warm yolk-and-butter emulsion flavored with a concentrated reduction of vinegar, herbs, and aromatics.
Prerequisites
- Hollandaise
- Reduction
- Fine herb handling
Equipment
Steps
Reduce the vinegar with shallot and part of the tarragon until concentrated, then cool slightly.
The liquid smells bright and aromatic, with only a small concentrated volume remaining.
5 to 8 minutes
The reduction intensifies acidity and herb-aromatic structure without diluting the final emulsion.
Whisk the yolks with the reduction over gentle heat until thickened and aerated.
The yolks become pale and lightly ribboned.
2 to 5 minutes
This creates the protein network needed to stabilize the butter.
Whisk in the warm clarified butter gradually until emulsified.
The sauce becomes glossy and coherent without visible fat separation.
3 to 6 minutes
The butter must be dispersed into small droplets for stability and texture.
Fold in the remaining fresh tarragon and adjust salt and acidity.
The finished sauce tastes rich, herbal, and bright rather than heavy or flat.
1 minute
Fresh herbs added late preserve their volatile aromatic character.
Sensory Checkpoints
- Reduction is sharply aromatic before yolk stage
- Sauce remains glossy and warm
- Tarragon aroma is distinct in the finish
Common Mistakes
🔴 Sauce tastes dull despite richness.
Cause: Weak reduction or insufficient fresh herb finish.
Prevention: Reduce properly and finish with fresh tarragon.
Recovery: Adjust with a few drops of vinegar and fresh chopped herb.
🔴 Sauce splits.
Cause: Temperature too high or butter added too quickly.
Prevention: Treat as hollandaise with strict heat control.
Recovery: Re-emulsify into a fresh yolk-water base if needed.
Variations
Cultural Context
Bearnaise is a classic French derivative of hollandaise and has long been associated with grilled meats and refined bistro cooking.
Notes
["Bearnaise is not simply hollandaise with herbs; the reduction is structurally important."]