Place a frying pan on medium heat and add in the ground pork. Break it apart with a wooden spoon and fry for 5 minutes, stirring frequently.
Add in the scallions, garlic, and ginger. Fry for a further 3 minutes until aromatic.
Next up, add in the soy sauce, gochujang, sugar, sesame oil, rice wine vinegar, and gochugaru flakes. Fry for 5-10 minutes, stirring frequently. Taste and season accordingly with sugar, pepper, and/or sugar. Turn off the heat.
Meanwhile, make your dough. Combine the self-raising flour and yogurt in a large bowl. Stir with a pair of chopsticks or a fork until loosely combined, then knead for around 30 seconds until a ball of dough forms. The dough shouldn't be sticking to your hands, if so, add more flour (scroll up the blog to see photos for reference). Set aside covered in cling film until your filling has cooled slightly.
Slice your dough into 4 equal pieces.
Roll out one piece of dough into a circular wrapper around 4 inches in diameter and ¾ cm thick. Place 1-2 spoonfuls of the filling into the centre of the wrapper, and bring all the corners of the wrapper into the centre. Pinch and twist to seal the dough. Repeat for all dumplings.
Brush the smooth top of the dumplings in vegetable oil, then dunk in sesame seeds (or you can sprinkle them on). Place on little squares of parchment paper and into the steamer (this prevents the dumplings from sticking to the steaming basket). Steam for 15 minutes on medium heat until the dumplings are fluffy.
Once your dumplings are cooked, remove from the steamer and enjoy!
Notes
Step-by-Step Photos: My blog post includes helpful step-by-step photos to help guide you through making this recipe.