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The Fervor's Cookbook 2 is one of the many Key Items found throughout Elden Ring, sold by an Isolated Merchant near the entrance to the Academy of Raya Lucaria.
The Fervor's Cookbook 2 is a Key Item Recipe Book that will unlock extra crafting recipes once you have obtained it.
This includes the following recipes:
This item is sold by the Isolated Merchant located south of the Academy of Raya Lucaria Main Gate, along the overgrown bridge and teleport seal. It is sold for 3,500 Runes.