Pepper Peach Pork

Name: Pepper Peach Pork
Ingredients: 3 tablespoons kosher salt; Freshly ground black pepper; 1 tablespoon sugar; 1 teaspoon ground cumin; 1/2 teaspoon ground coriander; 8 pounds Boston butt or pork shoulder roast; 2 large sweet onions, peeled and thinly sliced; 4 medium peaches, peeled, pitted, and chopped; 1 tablespoon brown sugar; 1/4 cup white miso; 3 jalapeños, seeded and chopped fine; 1/2 cup chopped cilantro stems (from the top, not the root end; you'll need the leaves, too); 6 cloves garlic, minced; 4 tablespoons rice vinegar, divided; 1/2 cup cilantro leaves, chopped; 1 red onion, peeled and sliced