Slow-Cooker Pulled-Pork Tacos

From www.realsimple.com

2 cups store-bought salsa, plus more for serving
2 tablespoons chili powder
2 tablespoons dried oregano
2 tablespoons unsweetened cocoa powder
kosher salt
1 2 1/2-pound boneless pork butt or shoulder, trimmed of excess fat
18 corn tortillas
1/2 cup fresh cilantro sprigs
3/4 cup sour cream
1 lime, cut into wedges

1.In a 4- to 6-quart slow cooker, combine the salsa, chili powder, oregano, cocoa, and 1 teaspoon salt. Add the pork and turn to coat.
2.Cook, covered, until the meat is tender and pulls apart easily, on high for 4 to 5 hours or on low for 7 to 8 hours.
3.Twenty minutes before serving, heat oven to 350° F.
4.Stack the tortillas, wrap them in foil, and bake until warm, about 15 minutes.
5.Meanwhile, using 2 forks, shred the pork and stir into the cooking liquid. Serve with the tortillas, cilantro, sour cream, lime, and extra salsa.