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["Heat oven to 350 degrees.", "In a small pan over medium-low heat, toast fennel seeds, swirling the pan; set aside.", "In the bowl of an electric mixer fitted with the paddle attachment, beat butter and sugar on medium-high speed until smooth, about 2 minutes.", "Add eggs, extracts, and zest, and beat on medium speed until creamy and light, 2 to 3 minutes.", "In a medium bowl, combine remaining ingredients.", "Add to butter mixture.", "Mix on low speed until just incorporated.", "Remove dough to a clean surface; divide into quarters.", "Form into 9x1 inch logs, place on ungreased baking sheet 2 inches apart, and bake until lightly browned, 25 to 30 minutes.", "Remove from oven, and cool slightly.", "Reduce oven temperature to 275 degrees.", "Using a serrated knife, cut logs on the diagonal into 1/2"" thick slices.", "Arrange biscotti on their sides on a baking sheet.", "Return to oven, and bake until golden, about 30 minutes.", "Turn biscotti over, and bake for 30 minutes more."]