In a large mixing bowl, combine 2 cups of all-purpose flour and 1 teaspoon of salt. Gradually add ½ cup of hot water, mixing until the mixture comes together. Then slowly add ½ cup of cool water until a shaggy dough forms.
Transfer the dough to a floured surface and knead for 5-7 minutes until smooth and elastic. Cover with a damp cloth or plastic wrap and let rest for at least 30 minutes.
While the dough rests, thinly slice the green parts of the scallions and set aside in a bowl.
Divide the dough into four equal portions. Roll out one portion on a floured surface into a thin circle about 8-10 inches in diameter. Repeat with remaining portions.
Brush a thin layer of vegetable oil over the rolled-out dough. Evenly sprinkle a quarter of the sliced scallions on top. Roll the dough into a log from one edge, coil the log into a spiral, flatten gently, and roll out again into a thin circle.
Heat a non-stick skillet over medium heat and add 1 tablespoon of vegetable oil. Cook the pancake for 2-3 minutes on each side until golden brown and crispy. Repeat with remaining pancakes, adding more oil as needed.
In a small bowl, mix 4 tablespoons soy sauce, 3 tablespoons rice vinegar, 2 cloves minced garlic, 1 tablespoon honey, and 1 teaspoon sesame oil. Top with a pinch of sesame seeds for crunch.