Description
Ultra-rapid freezing using liquid nitrogen or specialized equipment to create ultra-smooth textures by minimizing ice crystal formation.
Technical
Involves rapid nucleation of water molecules at temperatures below -196°C (liquid nitrogen), preventing large ice crystal formation through vitrification. Key reactions include supercooling and glass transition of aqueous solutions.
Culinary Significance
Enables creation of ice creams and custards with unparalleled smoothness, and allows instant freezing of delicate emulsions without structural damage.
Science
Primary Reaction
Vitrification of water
Parameters
Temperature
-70°C optimal
-196°C to -40°C range
Time
45 seconds
15 seconds – 2 minutes
Equipment
Liquid nitrogen bathAnti-static stainless steel containersCryo gloves and face shield