In a large mixing bowl, combine the flour, water, salt, and sesame oil. Whisk until the batter is smooth and free of lumps.
Stir in the chopped green onions until evenly distributed throughout the batter.
Heat a non-stick skillet over medium heat and add the vegetable oil, ensuring it coats the bottom of the pan.
Pour half of the batter into the skillet, spreading it evenly to form a thin pancake. Cook for about 3-4 minutes or until the bottom is golden brown and crispy.
Carefully flip the pancake and cook for an additional 3-4 minutes on the other side until it is also golden brown.
Remove the pancake from the skillet and place it on a paper towel to absorb excess oil. Repeat with the remaining batter to make a second pancake.
Cut the pancakes into wedges and serve hot with soy sauce for dipping.