01 - Whisk together flour, eggs, water, salt, baking powder, and 1 tablespoon oil in a mixing bowl until completely smooth. Let the batter rest for 10 minutes to hydrate properly.
02 - Heat a non-stick skillet over medium heat with a splash of oil. Add ground pork or chicken, grated ginger, and 1 tablespoon soy sauce. Cook while breaking up the meat until no longer pink, approximately 3-4 minutes.
03 - Stir in grated carrot and shredded napa cabbage. Continue stir-frying for 2-3 minutes until vegetables begin to soften. Mix in sesame oil, chopped scallions, and black pepper to taste. Transfer filling to a bowl and set aside.
04 - Wipe the skillet clean and return to medium heat. Lightly oil the pan. Pour one-quarter of the batter and swirl to coat the bottom evenly, creating a thin pancake about 7-8 inches in diameter.
05 - When bubbles form and edges appear set, approximately 2 minutes, spread one-quarter of the meat filling and drizzle some beaten egg over half the pancake. Fold the uncovered half over the filling and press gently. Cook for 2 minutes per side until golden brown and cooked through.
06 - Repeat the cooking process with the remaining batter and filling to create 4 stuffed pancakes total. Keep cooked pancakes warm in a low oven if desired.
07 - Combine soy sauce, rice vinegar, sesame oil, and chili flakes in a small bowl. Stir until well blended.
08 - Serve the pancakes hot, cut into halves or quarters. Arrange on plates with the dipping sauce on the side for dipping.