-
1
Whisk egg yolks with lemon juice in heatproof bowl set over simmering water (bowl must not touch water); whisk constantly 3 minutes until pale and ribbon-like.
-
2
Remove bowl from heat; whisk continuously while slowly drizzling in warm clarified butter in thin stream, allowing emulsion to form.
-
3
Continue whisking and adding butter until sauce is thick, glossy, and pale yellow.
-
4
Taste and season with salt, white pepper, and cayenne; add pinch more lemon juice if needed.
-
5
Pass through fine-mesh chinois if lumpy; keep warm at 48–52°C in warm water bath.
-
6
If sauce breaks, whisk 5 ml cold water or cream in clean bowl and slowly whisk in broken sauce to re-emulsify.