Combine all the slaw ingredients in a large bowl. Using tongs or clean hands, thoroughly toss everything until well combined. Cover and refrigerate until ready to serve, anywhere from 1 to 6 hours. Toss gently to recombine before serving.
Assemble the BBQ pulled pork tacos
Melt 1 to 2 tablespoons of butter in a large cast-iron skillet over medium-high until it foams, about 1 minute. Add the tortillas, a couple at a time, and cook until the bottoms are lightly charred, 15 to 45 seconds.
Turn and top each with 3 ounces (85 g) pork and cook for 30 seconds. Fold the tacos slightly, and move to a large platter. Repeat with the remaining tortillas, adding butter as needed to the skillet between batches.
Top each taco with about 1/4 cup slaw and 1 tablespoon barbecue sauce. Serve immediately and don’t forget to pass additional barbecue sauce on the side.