1.5 tbsp rice vinegar – for serving (dipping sauce)
1 tsp toasted sesame oil – for serving (dipping sauce)
0.5 tsp sugar – for serving (dipping sauce)
0.25 tsp red pepper flakes – optional, for serving (dipping sauce)
Instructions
Combine the all-purpose flour and kosher salt in a medium bowl. Pour in the just-boiled water while stirring with chopsticks or a fork, then drizzle in the room temperature water until a shaggy dough forms. Knead on the counter until smooth and elastic, 5–7 minutes, cover, and rest 30 minutes.
In a small bowl, stir 2 tbsp neutral oil with the toasted sesame oil to make a brushing mixture; reserve the remaining neutral oil for frying.
Make the dipping sauce: In a small bowl, mix the soy sauce, rice vinegar, the toasted sesame oil for serving, sugar, and red pepper flakes; set aside.
Dust the work surface lightly with the all-purpose flour for dusting. Divide the dough into 4 equal pieces.
Working with one piece at a time, roll into a thin rectangle (about 9Ă—12 inches). Brush a thin, even layer of the oil mixture over the surface and scatter over a quarter of the scallions. Roll up tightly from the long side into a log, then coil the log into a spiral (like a snail). Repeat with remaining pieces, cover the spirals, and rest 15 minutes.
Flatten each spiral gently, then roll into a 7–8 inch round, keeping the layers intact.
Heat 2 tbsp of the reserved oil in a nonstick or cast-iron skillet over medium heat until shimmering. Fry one pancake until the bottom is golden brown and crisp, 2–3 minutes; flip and cook the second side 2–3 minutes more. Adjust heat to prevent burning and add more reserved oil between pancakes as needed. Repeat with remaining pancakes.
Cut into wedges and serve hot with the dipping sauce.