1 (4 to 5 pound) boneless pork shoulder
Salt and freshly ground black pepper
2 tablespoons vegetable oil
2 tablespoons extra-virgin olive oil
2 onions, cut into wedges, root end attached
4 large cloves garlic, crushed
1 1/2 teaspoons chopped oregano leaves, half a palmful
2 red chiles, thinly sliced
4 bay leaves
1 (12-ounce) bottle Mexican beer
2 cups chicken stock
4 oranges, juiced about 2 cups
1 chipotle pepper, seeded and finely chopped, plus 1 tablespoon of adobo sauce
2 limes, juiced
1 1/2 cups white wine vinegar or white balsamic vinegar
1/2 cup sugar
2 small red onions, thinly sliced
1 cup drained sliced store-bought pickled jalapenos or banana pepper rings
1/4 head red cabbage, shredded
1 cup crumbled queso fresco or 2 cups shredded Monterey jack
16 corn or flour tortillas, charred over open flame and kept warm in tortilla warmer or towel