To make the scallion oil: In a small pot over low heat, add the avocado oil and white parts of the scallions. Cook for about 5 minutes, until the scallions are lightly browned and fragrant. Remove and discard the scallions, and reserve the infused oil.
To make the oil paste: In a bowl, combine the all-purpose flour and salt. Slowly whisk in the scallion oil until a smooth paste forms.
To make the dipping sauce: In a small bowl, combine the soy sauce, rice vinegar, sugar, sesame oil, red chili flakes, and minced scallions. Stir until the sugar is dissolved and set aside.
To layer the dumpling wrappers: Arrange 4 dumpling wrappers in a row, overlapping each one by about 1 inch. Brush with the oil paste and sprinkle with minced scallions. Use a knife to make 5 horizontal cuts along the row.
To roll, coil, and flatten: Roll the layered wrappers into a tight log, then coil the log into a spiral. Gently press it down to flatten. Brush both sides with the oil paste, then use a rolling pin to roll it into about a 4-inch round. Repeat with the remaining wrappers to make 4 pancakes.
To pan-fry the scallion pancakes: Heat a flat-bottomed skillet over medium heat and add a thin layer of avocado oil. Pan-fry each pancake for about 2 minutes per side, until golden. Repeat with the remaining pancakes, adding more oil as needed. Serve hot with the dipping sauce.