Gelatine

[Becky]

Animal jelly; glutinous material obtained from animal
tissues by prolonged boiling. Specifically (Physiol. Chem.), a
nitrogeneous colloid, not existing as such in the animal body, but
formed by the hydrating action of boiling water on the collagen of
various kinds of connective tissue (as tendons, bones, ligaments,
etc.). Its distinguishing character is that of dissolving in hot water,
and forming a jelly on cooling. It is an important ingredient of
calfs-foot jelly, isinglass, glue, etc. It is used as food, but its
nutritious qualities are of a low order.