First prepare the spice mix. Measure the cumin, garlic, coriander, chili powder, oregano and salt - combine and mix together well, set aside.
Next prepare the roast - Using a paper towel, blot the meat to remove the moisture. Then coat lightly with olive oil, season generously with salt and pepper and the seasoning mix. Sear it well on ALL sides - I'm talking a brown crusty sear. Five minutes per side.
Add the remaining ingredients.Cover tightly and insert into a 350 degree oven for three hours. When complete shred with two forks.
Makes super tasty tacos and delicious over rice. Serve with your favorite toppings, enjoy!