01 - Whisk together all-purpose flour, rice flour, salt, egg, and cold water in a large bowl until smooth batter forms.
02 - Gently fold scallions, carrots, onion, and any desired optional add-ins into the batter.
03 - Heat 1 tablespoon vegetable oil in a large non-stick skillet over medium-high heat.
04 - Pour about one-quarter of the batter into the skillet, spreading evenly into a thin round. Cook for 3-4 minutes until bottom is golden and crispy. Flip carefully and cook another 2-3 minutes until both sides are golden.
05 - Repeat with remaining batter, adding more oil as needed for each pancake.
06 - Mix soy sauce, rice vinegar, sesame oil, sugar, chopped scallion, and gochugaru in a small bowl.
07 - Slice pancakes into wedges and serve hot with dipping sauce.