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1
Preheat the oven to 325 degrees F. If you are short on time, you can cook the pork at temperatures up to 350 degrees F; however, slower and lower cooking results in more tender and juicy meat.
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2
To prepare the pork for cooking, set the pork on a baking sheet and score the skin into a criss-cross pattern.
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3
Be sure to only score the fat and not deep enough to cut into the meat.
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4
Scoring exposes more fat to the heat, which results in more fat being rendered during cooking.
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5
Bring the vinegar, sugar and 5 cups water to a boil in a saucepan; then add the baking soda and bring back up to a boil.
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6
Carefully pour the boiling liquid over the skin of the roast.
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7
Pat the skin dry and discard the liquid.
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8
Next, rub the grapeseed and olive oils all over the pork; then rub the pork with the rosemary and thyme.
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9
Sprinkle with salt and pepper.
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10
Place the pork in a roasting pan and transfer to the oven.
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11
Cook, uncovered, until the internal temperature reaches 145 degrees F, about 1 1/2 hours.
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12
When done, remove the pork from the pan and transfer it to a rack set over a baking sheet.
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13
Cover with vented foil and let rest for at least 15 minutes (the internal temp will increase by at least 5 or 10 degrees).