What You Need to Know
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.
Provides structural integrity to clarified stocks while enhancing mouth-coating umami delivery through prolonged flavor release.
Key Parameters
Temperature
12°C
4°C - 30°C
Time
12 hours
4 hours - 48 hours
Equipment
Chinois lined with cheeseclothBain-marie for gentle reheatingChamber vacuum for bubble removal
Steps
- 1.
Canard en Gelée (Lyon): Preserves poached duck texture while creating flavor encapsulation
- 2.
Oeufs en Gelée (Paris): Thermal protection of soft eggs during chilled service
The Science
Primary Reaction
Collagen → Gelatin (hydrolysis) → Thermoreversible gelation