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1
Place soy sauce, honey, rice wine, hoisin sauce, ketchup, brown sugar, garlic, five-spice powder, black pepper, cayenne pepper, and curing salt in a saucepan. Bring to a boil on high heat; reduce heat to medium-high. Cook for 1 minute. Remove from heat. Cool to room temperature.
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2
Cut pork roast in half lengthwise. Cut each half again lengthwise forming 4 long, thick pieces of pork.
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3
Transfer cooled sauce to a large mixing bowl. Stir in red food coloring. Place pork sections into sauce and coat each piece. Cover with plastic wrap and refrigerate 4 to 12 hours.
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4
Preheat grill for medium heat, 275 to 300 degrees F (135 to 150 degrees C) and lightly oil the grate. Line a baking sheet with parchment paper.
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5
Remove sections of pork from marinade and let excess drip off. Place on prepared baking sheet. Sprinkle with kosher salt to taste.
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6
Transfer pork sections to grate over indirect heat on prepared grill. Cover and cook about 45 minutes. Brush with marinade; turn. Continue cooking until an instant-read thermometer inserted into the center reads 185 and 190 degrees F, about 1 hour and 15 minutes more. Do not use any more marinade on cooked meat until after you boil it.
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7
Place leftover marinade in saucepan; bring to a boil; let simmer 1 minutes. Remove from heat. Now you can use it to brush over the cooked pork.
