1 slow mild seasoningbirria chivo carnero Recipes

young goat meat , perferably a hind quarter or 1 3 lb bone in lamb roast from the shoulder or butt-end of the leg, chiles guajillos, stemmed,seeded and deveined, garlic, cider vinegar, ground cumin, ground black pepper, salt, sugar, masa harina (mixed with 1 cup plus 2 tsp. hot tap water), ripe tomato , roasted,peeled and cored, oregano (mexican if you can find it), salt, onion, fresh coriander, limes