You should learn family recipes before the  elder pass away.
Jenna came home from college on a diet, but her cancer-stricken grandma wanted to teach her how to make mac-and-cheese.
Jenna doesn't want to eat fattening food.
Jenna asks her grandma if she knows any recipes for less fattening food.
Jenna tells her grandma that no one wants to eat fattening food anymore and meets her friends at a salad bar.
Jenna's grandmother teaches her how to make croutons and Balsamic vinaigrette from scratch.
Jenna's grandmother dies later that night, sad and alone, and the family recipe for mac-and-cheese is lost.