What You Need to Know
Utilizes the freezing front's exclusion of solutes (agarose/gellan polymers) to form concentrated gel walls between ice crystals. Upon thawing, these walls remain as a honeycomb microstructure. Named for cryoconcentration effects and cold-set gelation mechanisms.
Creates ethereal, crunchy-airy textures in fruit gels or savory broths. Used by chefs like Joan Roca for 'spherical olive' shells and Dominique Crenn for mineral-infused 'geological' desserts. Requires precise thermal control for consistent pore size.
Key Parameters
Temperature
°C - °C
Time
12-18 hours
4 hours (small molds) - 48 hours (large blocks)
Equipment
Silicone molds (heat transfer rate critical)Immersion circulator (for controlled thawing)Vacuum sealer (optional, for bubble-free gels)
Steps
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The Science
Primary Reaction
Freeze Concentration-Induced Gelation