_:vb7379442 "2010, Ken Albala, Rosanna Nafziger Henderson, The Lost Art of Real Cooking: Rediscovering the Pleasures of Traditional Food One Recipe at a Time, Penguin, \u2192ISBN:"@en . _:vb7379442 "Lupins, although a bean, are similar to olives aesthetically, and are equally good with breakfast. The trick is first to soak them overnight until rehydrated, then boil them for a few hours like any bean. They will not soften. Then soak them again, changing the water every day for several weeks until the bitterness is gone."@en .