What You Need to Know
Calcium ions from lactate gluconate cross-link alginate polymers at the liquid's surface, forming a semi-permeable membrane while maintaining liquid interiors. The lower calcium concentration allows slower, more controlled gelation than calcium chloride.
Enables encapsulation of delicate flavors (citrus, alcohol) that would denature in traditional spherification.
Key Parameters
Temperature
15°C
4°C - 25°C
Time
90 seconds
30 seconds - 3 minutes
Equipment
Precision scale (0.01g resolution)Immersion circulator (for temperature control)Perforated spoon (3mm holes)
Steps
- 1.
Liquid olive (El Bulli): Encapsulates olive oil while mimicking olive's shape
- 2.
Cocktail spheres (Modernist mixology): Preserves alcohol's volatility until consumption
The Science
Primary Reaction
Ionic cross-linking of alginate