The book Bread from Eden traces the legendary bread fallen from heaven that the Hebrews ate as a staple diet during 40 years in the biblical story of Exodus. It argues that the more than 3,300 year-old miracle food never disappeared from the world. The Hilliger hypothesis is rooted in the truth of a substitute for bread, the ancient manna, and gives a natural interpretation to an element considered imaginary and abstract. The quest includes a large bibliography, which compiles hundreds of citations from various periods and languages, to open up a critical reflection on topics such as environmentalism, vegetarianism, gratuity, priesthood and holiness.