Place 2 cups all-purpose flour in a large bowl. Slowly pour in the boiling 3/4 cup water while stirring with a fork. Add 2 tbsp cold water and mix until a shaggy dough forms. Knead for 5β7 minutes until smooth. Cover with a damp towel and rest.
2 cups all-purpose flour, 3/4 cup water, 2 tbsp cold water
Let the dough rest covered for 30 minutes. This relaxes the gluten and makes rolling much easier.
Divide the dough into 4 equal pieces. On a lightly floured surface, roll each piece into a thin rectangle or oval, about 10β12 inches long.
Brush each rolled-out piece generously with 3 tbsp sesame oil and melted 3 tbsp butter. Sprinkle evenly with 2 tsp salt and the sliced 6 scallions, thinly sliced.
3 tbsp sesame oil, 6 scallions, 2 tsp salt, 3 tbsp butter
Tightly roll each piece into a long log, then coil the log into a snail shape, tucking the end underneath. Flatten each coil gently with your palm.
Roll each coil out again into a flat pancake about ΒΌ inch thick. The layered coiling is what creates the flaky texture.
Heat 1 tbsp of 4 tbsp neutral oil in a skillet over medium heat. Cook each pancake for 3β4 minutes per side until golden brown and crispy. Press lightly with a spatula as they cook.
4 tbsp neutral oil
Transfer to a cutting board, cut into wedges, and serve immediately while hot and crispy. Optionally serve with a dipping sauce of soy sauce, rice vinegar, and a dash of chili oil.