Place a NON-STICK frying pan on a medium heat. Add in roughly 1.5 Tablespoons of Vegetable Oil.
Dip the bottoms of each Mandu into the oil first, then arrange neatly into the frying pan.
After 1-2 minutes - once you hear the mandu start to sizzle in the oil - give the flour mixture another stir. Carefully pour the mixture into the frying pan, around the dumplings. Add in the Green Onions (1 Tablespoon) as well. Then close the lid.
Cooking time will vary - but we want to cook it until almost all of the wet mixture has evaporated. You'll see a crispy webbing form. It should take roughly 13-15 minutes (but keep an eye on it!)
Afterwards, if its ready, gently slide it off onto a plate. Then cover it with another equal-sized plate and give it a flip. Serve it with dipping sauce. Enjoy!