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1
Preheat oven to 400u00b0F. In a medium bowl, whisk together 2 tablespoons oil, vinegar, soy sauce, 2 grated garlic cloves, ginger, chile paste, and 1/4 teaspoon salt. Place pork in a large resealable plastic bag and pour marinade over, tossing to coat. Marinate for 30 minutes at room temperature.
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2
In a small bowl, whisk together remaining 1 grated garlic clove, fish sauce, lime, honey, chile pepper, peanuts, and 1 tablespoon water. Set aside.
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3
On a rimmed baking sheet, toss Brussels sprouts with 1 1/2 tablespoons oil and 1/2 teaspoon salt. Roast 15 minutes, then toss. Continue to roast until browned and cooked through, 10 to 15 minutes more. Transfer to a large bowl and toss with 2 tablespoons of the vinaigrette. Taste and add more vinaigrette, if desired.
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4
Meanwhile, heat a large skillet with 2 tablespoons oil over medium-high heat. Remove pork from marinade (reserve marinade) and sear on 3 sides until lightly browned, about 3 minutes per side. Turn tenderloins onto their fourth side and add broth to pan. Transfer skillet to oven and roast pork, basting occasionally, until internal temperature reaches 140u00b0F for medium rare or 145u00b0F for medium, 10 to 13 minutes more (temperature will rise by about 10 degrees after cooking). Transfer pork to cutting board and let rest 5 minutes, and reserve skillet.
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5
Add reserved marinade to the skillet and reduce over medium heat, stirring and scraping up the browned bits, until thickened to a pan sauce that coats the back of a spoon, 3 to 5 minutes. Remove from heat and whisk in butter. Taste and adjust seasoning.
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6
To serve, slice pork and drizzle with pan sauce. Spoon Brussels sprouts onto plate, sprinkle with mint, and serve additional pan sauce on side.
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7
Chile marinade and fish sauce vinaigrette can be made one day in advance.
