Description
Liquid‑nitrogen spherification creates a crisp, thin shell around a liquid core by immersing calcium‑alginate drops into liquid nitrogen.
Technical
The process relies on rapid calcium ion diffusion into alginate, forming a cross‑linked gel network, while the extreme temperature gradient causes ice crystal formation that mechanically reinforces the membrane. The resulting shell is 1–2 mm thick and remains liquid inside until thawed.
Science
Primary Reaction
Calcium ion cross‑linking of alginate forming a gel network while rapid freezing creates ice crystals
Sensory Profile
Aroma ()
crispcoldsubtle fruitmetallicozone-like
Origin & History
Civilization
Molecular gastronomy chefs
Era
Early 2000s