01 - Whisk together the flour, eggs, water, salt, baking powder, and 1 tablespoon oil until smooth. Let the batter rest for 10 minutes to allow proper hydration.
02 - Heat a non-stick skillet over medium heat with a splash of oil. Add ground pork or chicken, ginger, and soy sauce. Cook, breaking up the meat, until no longer pink, about 3–4 minutes.
03 - Add the grated carrot and napa cabbage. Stir-fry for another 2–3 minutes until vegetables soften. Stir in sesame oil, scallions, and black pepper. Remove filling from the skillet and set aside.
04 - Wipe the pan clean, return to medium heat, and lightly oil. Pour in a quarter of the batter, swirling to coat the bottom for a thin pancake about 7–8 inches wide.
05 - Once bubbles form and edges look set, about 2 minutes, spread a quarter of the filling and a drizzle of beaten egg onto half the pancake. Fold the pancake over to cover the filling, then gently press down and cook for 2 more minutes per side until golden and cooked through.
06 - Repeat with remaining batter and filling to make 4 stuffed pancakes. For the dipping sauce, combine soy sauce, rice vinegar, sesame oil, and chili flakes in a small bowl.
07 - Serve pancakes hot, cut in halves or quarters, with dipping sauce on the side.