What is Preacher's Strawberry Jam?

When Catherine's father grounds her from Dairy Queen for the summer, Catherine turns her hands to industry and spends the time making strawberry jam from her grandfather's crop. It is a task that teaches her to take a hand in her own life's plans. Later in the story, when Catherine has gone to Atlanta and returned, she goes back to the strawberry patch and again looks to her family roots and the things she knows best. When the novel ends, Catherine is busily making Preacher Jam and selling it to stores all over the country, a lovely ironic and pastoral end to the story.