Why does jelly wobble?

Cathy Lewis

Jelly is a soft semisolid containing gelatine. Gelatine is processed from the protein collagen found in skin and bones. The molecules in gelatine are intertwined in a triple helix. As they’re mixed with hot water their bonds break, they unravel and become long, stretchy wriggly lines. As the water cools down, the helices start to reform and cross-linking occurs. This creates supermolecules that are so long they span across the whole jelly in a three-dimensional web. Water gets trapped in the spaces, giving jelly its wobble.