In a large bowl, mix AP flour with hot water. Whisk together while alternating between flour and water until water is absorbed and dough pulls away from the side and dough is formed.
Knead for 8 mins. Lightly flour surface for easier handling.
Cover dough in plastic saran wrap and let rest for 20-30 minutes.
Divide dough into 8 balls.
First Roll: Roll out each ball into a circle with a rolling pin. Sprinkle salt and top with FCGO (finely chopped green onions). Brush surface with sesame oil.
Coil the dough and green onions into a bundle. Tuck in the ends and press dough to flatten.
Second Roll: Divide dough into 8 balls. Roll out each ball into a circle with a rolling pin until it becomes 1/8″ thick.