Description
Thermally stabilized protein foam creation through controlled denaturation.
Technical
Egg yolk lipoproteins (livetins, phosvitins) undergo partial denaturation at 60-65°C, exposing hydrophobic groups that stabilize air bubbles while sugar increases viscosity via hydrogen bonding with water molecules. Citric acid in wine prevents excessive protein aggregation.
Culinary Significance
Creates light yet stable bases for both sweet and savory applications, with alcohol-soluble flavors becoming bioavailable through the emulsion.
Science
Primary Reaction
Protein denaturation (not coagulation)
Parameters
Temperature
63°C optimal
58°C to 68°C range
Time
7 minutes
3 minutes – 12 minutes
Equipment
Copper bowl (ideal for thermal response)Balloon whisk (minimum 8 wires)Bain-marie with 2cm water depth