Edda is a manual of poetry that contains many stories of Norse mythology. Religion Iceland embraced Christianity in c. AD 1000, in what is called the kristnitaka, and the country, while mostly secular in observance, is still predominantly Christian culturally. The Lutheran church claims some 84% of the total population. While early Icelandic Christianity was more lax in its observances than traditional Catholicism, Pietism, a religious movement imported from Denmark in the 18th century, had a marked effect on the island. By discouraging all but religious leisure activities, it fostered a certain dourness, which was for a long time considered an Icelandic stereotype. At the same time, it also led to a boom in printing, and Iceland today is one of the most literate societies in the world. While Catholicism was supplanted by Protestantism during the Reformation, most other world religions are now represented on the island: there are small Protestant Free Churches and Catholic communities, and even a nascent Muslim community, composed of both immigrants and local converts. Perhaps unique to Iceland is the fast-growing Ásatrúarfélag, a legally recognized revival of the pre-Christian Nordic religion of the original settlers. According to the Roman Catholic Diocese of Reykjavík, there were only approximately 30 Jews in Iceland as of 2001. The former First Lady of Iceland Dorrit Moussaieff was an Israeli-born Bukharian Jew. Cuisine Icelandic cuisine consists mainly of fish, lamb, and dairy. Fish was once the main part of an Icelander's diet but has recently given way to meats such as beef, pork, and poultry. Iceland has many traditional foods called Þorramatur. These foods include smoked and salted lamb, singed sheep heads, dried fish, smoked and pickled salmon, and cured shark. Andrew Zimmern, a chef who has traveled the world on his show Bizarre Foods with Andrew Zimmern, responded to the question "What's the most disgusting thing you've ever eaten?" with the response "That would have to be the fermented shark fin I had in Iceland." Fermented shark fin is a form of Þorramatur. Performance art The earliest indigenous Icelandic music was the rímur, epic tales from the Viking era that were often performed a cappella. Christianity played a major role in the development of Icelandic music, with many hymns being written in the local idiom. Hallgrímur Pétursson, a poet and priest, is noted for writing many of these hymns in the 17th century. The island's relative isolation ensured that