What You Need to Know
Warm emulsification leverages the thermal denaturation of egg yolk proteins (livetins, phosvitins) and the fluidity of melted butter to create stable oil-in-water emulsions. Key reactions include the unfolding of apolipoproteins at 60-65°C and the alignment of lecithin molecules at interfaces. The process requires precise temperature control to avoid protein coagulation or emulsion breakage.
Used for rich, velvety sauces like hollandaise and béarnaise, where warm egg yolks act as emulsifiers for melted butter. The gentle heat keeps butter liquid while allowing yolk proteins to optimally interact with fat molecules. Proper technique produces sauces with glossy sheen and stable viscosity.
Key Parameters
Temperature
°C - °C
Time
5-8 min
3 min - 15 min
Equipment
Steps
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The Science
Primary Reaction
Protein denaturation and phospholipid alignment