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["Put belly skin side down; arrange loin in center. Roll belly around loin so the short ends of the belly meet. If any of the belly or loin overhangs, trim meat. Unroll; set loin aside.", "Toast fennel seeds and red pepper flakes in a small skillet over medium heat until fragrant, about 1 minute. Tip spices into a bowl; let cool. Finely grind spices in a spice mill and transfer to a small bowl, along with the sage, rosemary, and garlic; set fennel mixture aside.", "Assemble porchetta according to steps 1-5.", "Refrigerate roast, uncovered, for 1-2 days to allow skin to air-dry; pat occasionally with paper towels.", "Let porchetta sit at room temperature for 2 hours. Preheat oven to 500u00b0F. Season porchetta with salt. Roast on rack in baking sheet, turning once, for 40 minutes. Reduce heat to 300u00b0F and continue roasting, rotating the pan and turning porchetta occasionally, until an instant-read thermometer inserted into center of meat registers 145u00b0F, 1 1/2-2 hours more. If skin is not yet deep brown and crisp, increase heat to 500u00b0F and roast for 10 minutes more. Let rest for 30 minutes. Using a serrated knife, slice into 1/2"" rounds.", "1. Set belly skin side down. Using a knife, score the belly flesh in a checkerboard pattern 1/3"" deep so roast will cook evenly.", "2. Flip belly skin side up. Using a paring knife, poke dozens of 1/8""-deep holes through skin all over belly. Don't be gentle! Keep poking.", "3. Using the jagged edge of a meat mallet, pound skin all over for 3 minutes to tenderize, which will help make skin crispy when roasted.", "4. Turn belly and generously salt both it and loin; rub both with fennel mixture. Arrange loin down middle of belly. Top with orange slices.", "5. Roll belly around loin; tie crosswise with kitchen twine at 1/2"" intervals. Trim twine. Transfer roast to a wire rack set in a rimmed baking sheet."]
