"Fædrene æde Druer, Roman" by Gustav Wied is a novel published in 1908. The work chronicles the decline of a landowning family and serves as a sequel to the author's first novel from 1898. The title comes from a modified biblical quotation from the Book of Jeremiah, referencing a proverb about fathers eating sour grapes and children's teeth becoming blunt. The novel was adapted into a film titled "Sort høst" in 1993.
Wikipedia page about this book: da.wikipedia.org/wiki/F