Mix the dough ingredients other than the oil/lard in a mixing bowl with a fork. Work until it roughly comes together, then turn out onto a clean, floured counter top and knead for a few minutes until the dough becomes smooth and stretchy. Add a little extra water or flour until you have a soft, not sticky, pliable dough.
Rest the dough for 5 minutes, then cut into 2 equal pieces and shape into balls. Rest again for 5 minutes under plastic wrap. On a floured counter, roll out 1 ball at a time into a 9 inch circle. Brush the center, leaving 1 inch around the outside of the circle, with sesame oil. Roll the disc up tightly, sealing the connecting edges by pressing the dough together. Take the rope and roll it up until a spiral as shown in the post. Seal end of the rope onto the side by pressing dough together.
Repeating and allow the spirals to rest under plastic wrap for 10 minutes. After 10 minutes, again roll out to 9 inch circle and this time fill the center with 1/2 of the scallions. Roll up into a rope, then into a spiral again. Allow these to rest 10 minutes under plastic wrap.
Finally, roll again to 9 inch circle. Heat a skillet over medium with a little drizzle of oil. When hot, add a pancake to the pan and cook for 2 minutes or so, checking the underside, until it has nice browned patches, but isn't burnt. You should see some bubbles appear in the dough before you flip it. Flip and repeat on the other side. Slide onto a plate and cook the rest of the pancakes. Keep warm under a towel while you make the filling.