A walking taco (also known as taco in a bag) is a popular party and concession stand food around here, and it's both fun and convenient since all of the toppings get piled into a bag of chips. Walking tacos are commonly made with a ground beef mixture, but with this recipe I've gone with carnitas, slow-cooked pork, because carnitas tacos are SO GOOD.
Place the pork shoulder, garlic, bay leaves, large chunks of onion, ancho chile powder, cumin, cloves, orange juice, lime juice, 1 tablespoon salt, a generous amount of black pepper and 1/2 cup water in the bowl of a 6-quart slow cooker. Cover and cook until the meat is tender and can easily be shredded with a fork, 4 hours on high or 6 hours on low.
Remove the pork to a large bowl and use two forks to shred. Heat 1 tablespoon vegetable oil in a large skillet over medium-high heat. Add half of the pork and 1/2 cup of the cooking liquid and cook, stirring occasionally, until the liquid has evaporated and the pork is crispy and dark brown, about 15 minutes. Remove to a plate and repeat with the remaining oil, pork and 1/2 cup cooking liquid (discard the remaining liquid), another 15 minutes.
Open the tortilla chip bags and crush a few of the chips. Gently roll down the tops of the bags about a third of the way. Fill the bags with some dollops of sour cream, then pork, then garnish with the finely chopped onions, radishes, cilantro and a few dashes of hot sauce. Serve with the lime wedges.
Chili Lime Sour Cream:
In a small bowl, combine the sour cream, mayonnaise, chili powder, salt and lime zest. Set aside.