Chorizo and Sweet Potato Tacos with Avocado Salsa

Name: Chorizo and Sweet Potato Tacos with Avocado Salsa
Ingredients: 3 tablespoons extra-virgin olive oil; 12 ounces fresh chorizo; 1 sweet potato (10 to 12 ounces), peeled and cut into ½-inch dice; Kosher salt and freshly ground black pepper; 1 cup low-sodium chicken broth; 1 large ripe but firm avocado, peeled, pitted and cut into ¼-inch dice; 1/4 large white onion, finely chopped; 1 to 2 serrano or jalapeños, stemmed, seeded and minced; 2 tablespoons fresh lime juice; 1/2 cup lightly packed cilantro, finely chopped; Warm corn tortillas, for serving; Crumbled queso fresco, for serving