What You Need to Know
Sodium alginate solution is frozen into molds before immersion in calcium lactate/chloride bath, slowing diffusion and allowing thicker membranes. The delayed reaction prevents premature bursting.
Enables larger, more stable spheres with customizable textures for cocktails, sauces, or encapsulated flavors.
Key Parameters
Temperature
0-20°C - 4°C
Time
1 hour
30 minutes - 2 hours
Equipment
FreezerSyringeSodium alginateCalcium chloride
Steps
- 1.
Frozen Aperol Spritz Sphere (Modernist cocktail bars): Prevents alcohol from breaking alginate bonds too quickly
The Science
Primary Reaction
Ionic crosslinking (alginate + Ca²⁺ → gel matrix)