Description
Mechanical incorporation of air bubbles into a liquid matrix stabilized by emulsifiers.
Technical
Air cells are trapped within a continuous phase (typically water or fat) via shear forces, with amphiphilic molecules (proteins, phospholipids) lowering interfacial tension at bubble surfaces. Overrun (volume increase) ranges 100-1000% depending on stabilizers.
Culinary Significance
Creates lighter textures without dilution, enables flavor delivery through increased surface area, and modifies mouthfeel perception.
Science
Primary Reaction
None (physical entrapment)
Parameters
Temperature
8°C optimal
2°C to 25°C range
Time
3-5 minutes
30 seconds – 15 minutes
Equipment
WhiskStand mixerSiphon charger (for espumas)Rotor-stator homogenizer