Description
A stabilized foam created by forced aeration using nitrous oxide.
Technical
Espuma is created by dissolving gas (N₂O) under pressure into a liquid matrix containing stabilizers like lecithin or gelatin. When released, the gas forms microscopic bubbles stabilized by surfactants.
Culinary Significance
Provides airy textures and concentrated flavors without dilution, used for both savory and sweet applications.
Science
Primary Reaction
Gas dissolution and bubble nucleation
Parameters
Temperature
4°C optimal
2°C to 60°C range
Time
2 hours
30 seconds – 24 hours (refrigerated)
Equipment
ISI whipperN₂O chargersPrecision scale