Description
Thermoreversible gel formed by collagen denaturation and realignment into a triple-helix matrix.
Technical
Type I collagen from connective tissues hydrolyzes into gelatin at 60-80°C, then undergoes sol-gel transition below 35°C through reformation of hydrogen-bonded crystalline regions. Gel strength (Bloom) determines melting point.
Culinary Significance
Provides structural integrity to clarified stocks while enhancing mouth-coating umami delivery through prolonged flavor release.
Science
Primary Reaction
Collagen → Gelatin (hydrolysis) → Thermoreversible gelation
Parameters
Temperature
12°C optimal
4°C to 30°C range
Time
12 hours
4 hours – 48 hours
Equipment
Chinois lined with cheeseclothBain-marie for gentle reheatingChamber vacuum for bubble removal