How to Make It
Season the pork with the garlic powder, salt and pepper. Transfer the pork to a small enameled cast-iron casserole. The pork should fit snuggly - this will prevent the meat from drying out while cooking. Add the Coca-Cola and 1/2 cup of water.
Transfer the casserole to the stovetop and bring to a boil. Lower the heat to moderate and add the bay leaves, thyme sprigs and tarragon leaves. Cover and simmer until the pork is very tender and the liquid has almost evaporated, about 1 1/2 hours. Using tongs, transfer the cooked pork to a cutting board, tent with foil and let cool slightly. Using two forks, shred the meat into bite size pieces. Serve the shredded pork in warm corn tortillas with salsa verde, onion, cilantro, radishes and lime wedges.