Spherification: Liquid Pearls and Spheres

In S1E7 of America's Culinary Cup, Buddha Lo turned coconut and passion fruit gelato into perfect spheres using spherification — a molecular gastronomy technique that gives liquids a solid outer skin. Wiley Dufresne explained it well: you encapsulate a liquid in a membrane using sodium alginate (from seaweed) dropped into a calcium chloride bath, creating a controlled chemical reaction that solidifies the surface. The result is a liquid-filled sphere that bursts in the mouth. At home, spherification kits are widely available. The key rule is flavour intensity — the flavour inside must be strong enough to shine through the gel membrane.