Red Chile Short Rib Tacos

Name: Red Chile Short Rib Tacos
Ingredients: 3 pounds bone-in beef short ribs, fat trimmed; Kosher salt and freshly ground pepper; 1/4 cup canola oil; 3 cups chicken stock; 2 dried ancho chile peppers, stemmed and seeded; 2 dried New Mexico chile peppers, stemmed and seeded; 4 dried cascabel chile peppers, stemmed and seeded; 1 large Spanish onion, chopped; 6 cloves garlic, smashed; 1 cup dry red wine; 1/2 cup port; 12 sprigs thyme; 16 hard corn taco shells; Cilantro, for topping; Queso Sauce, recipe follows, for topping; Pickled Red Onions, recipe follows, for topping; Green Chile Relish, recipe follows for topping