01 - Whisk together flour, eggs, water, salt, baking powder, and 1 tablespoon oil until smooth. Let 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, approximately 3 to 4 minutes.
03 - Stir in grated carrot and shredded napa cabbage. Cook for 2 to 3 minutes until vegetables soften. Mix in sesame oil, scallions, and black pepper. Remove from skillet and set aside.
04 - Wipe pan clean and return to medium heat with light oil coating. Pour one-quarter of batter, swirling to coat bottom evenly. Cook until bubbles form and edges set, about 2 minutes.
05 - Spread one-quarter of filling and drizzle beaten egg over half the pancake. Fold over to enclose filling, press gently, and cook 2 minutes per side until golden and fully cooked.
06 - Repeat process with remaining batter and filling to make 4 stuffed pancakes total.
07 - Combine soy sauce, rice vinegar, sesame oil, and chili flakes in a small bowl. Mix well until incorporated.
08 - Serve pancakes hot, cut into halves or quarters, with dipping sauce on the side for dipping.