...This chapter describes the processes of gelation and spherification. Gelation involves the use of a gelling agent to solidify food by trapping molecules in time and space. Gelatin is the oldest of gelling agents and is a key ingredient in Jell-O that causes the liquid blend to solidify upon cooling...

...Opening with the significance of making Jell-O at him in the author’s 1960s kosher household, shows how dispute of Jell-O, and the gelatin it contained, narrowed definition of what could be accepted as kosher among the Orthodox, generated a deep disagreement between Orthodox and Conservative Jews...