Unfrosted Myflixer today is focused on the competition between Kellogg and Post and was one that I liked. Though it included both Kellogg's and Marjorie Post's characters, it was based on their antagonism. The rest is fiction, and that's where the parallels end. An inside joke between Jerry and his co-writer Spike about making a movie based on Pop-Tarts, Jerry's favorite breakfast, gave rise to this film. They chose to make their private joke a reality once the pandemic struck and destroyed everything.