Description
Precision heating technique using water-mediated thermal transfer to prevent protein denaturation in temperature-sensitive preparations.
Technical
The method utilizes the phase change properties of water to maintain temperatures ≤100°C (212°F) at sea level. Named reactions include protein coagulation prevention (particularly egg yolk lipoproteins) and controlled fat emulsification. Key compounds involved are lecithin (phosphatidylcholine) in egg-based emulsions.
Culinary Significance
Essential for custards, chocolate tempering, and emulsified sauces where direct heat causes irreversible protein aggregation. Allows gradual hydration of starch molecules in pastry cream while preventing scorching. Standard in French mother sauces and confectionery work.
Science
Primary Reaction
Controlled protein hydration
Parameters
Temperature
°C to °C range
Altitude-adjusted boiling point affects maximum temperature
Time
10-30 minutes
3 minutes – 2 hours
Equipment