Made by combining two normally incompatible liquids through the incorporation of a binding or emulsifying agent.
Egg Yolks: Classically most common emulsifying agent.
Sabayon: Egg yolks and flavoring components whisked into a foamy mixture over a hot water bath until they are thick and airy. Clarified butter is then added in a steady stream and whisked until smooth.
Clarified Butter: Butter that has been slowly melted, allowing most of the water to evaporate and the milk solids to separate and settle in the bottom of the pan.
Warm emulsified sauces will break or curdle if not prepared or held properly. Ideal temperature 120 degrees (49 degrees Celsius)
Possible reasons for failure:
The sabayon was I sufficiently cooked.
The sabayon was overcooked.
Clarified butter was incorporated too quickly.
Excessive heat made the butter separate from the yolks.
If sauce broke, ways to restabalize:
Beat a few drops of water into the sauce, working it in from the bottom inner edge of the bowl and using a small wire whisk gradually bring the whole sauce into the process.
If the sauce broke because it was too hot, add a few drops of cold water.
If the sauce broke because it was too cold, add a few drops of warm water.
If the sauce appears about to break, dip the bottom of the bowl into ice water bath and whisk constantly until the sauce smooths.
Warm Emulsified Sauces
Cook sabayon over hot water bath, whisking constantly.