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1
Place pork skin in a large pot, and cover with water. Weigh down skin with a heatproof plate to keep it fully submerged. Bring water to boil over high, and cook until skin is soft and pliable, but not falling apart, about 2 hours.
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2
Carefully remove skin from pot, and arrange in an even layer, with no folds, on a wire rack in a rimmed baking sheet. Chill, uncovered, until completely cool, about 2 hours.
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3
Preheat oven to 175u00b0F. Using a sturdy heavy spoon or bench scraper, scrape and remove all fat under skin, being careful not to tear the skin. Place scraped skin on a wire rack on baking sheet. Bake in preheated oven until skins are dehydrated, dry, brown and brittle, about 8 hours.
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4
Stir together chile powder, cumin, and salt in a small bowl; set aside.
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5
Pour oil to a depth of 4 inches in a Dutch oven, and heat to 400u00b0F. Break dried skins into about 1-inch pieces. Fry skin pieces in hot oil, 3 at a time, prodding pieces until skins puff up and turn crispy, about 15 seconds. Transfer to a plate lined with paper towels; sprinkle with chile powder mixture. Repeat procedure with remaining skin pieces. Serve immediately.