Extra Virginity: The Sublime and Scandalous World of Olive Oil is a 2011 nonfiction book by American author Tom Mueller about olive oil. The book describes the history of olive oil, including its religious, economic, and culinary uses, as well as the current state of the olive oil industry. Extra Virginity asserts that the global olive oil industry is rife with corruption and fraud due to lax governmental regulations, but it also presents stories of individuals, including growers and government officials, who seek to curb such practices and promote genuine extra virgin olive oil. The book also includes an appendix with advice to consumers for choosing good oil. Extra Virginity expands upon "Slippery Business", an article Mueller wrote for The New Yorker in 2007 which described the state of