Put the flour in a mixer bowl and create a hole in the middle. Add the water, sugar and yeast into the hole, mix gently and wait 5 minutes.
Add the oil, sriracha and salt and knead for about 5 minutes, or until the dough has formed. Cover the bowl with a kitchen towel and set aside for 30 minutes.
Heat the oil in a pan, then add the onion and garlic and sauté for 2 minutes.
Add the salt and Sriracha and mix. Add the meat, stir well until cooked and add parsley. Cover with a lid and cook for 5 minutes, or until there is no more liquid in the pan.
Preheat the oven to 350 F (180 C).
Divide the dough into 8 parts, then flatten each part into ½ an inch (1 centimeters thick) dough circle.
Place in a small bowl and add 3 tablespoons of the filling, as shown in the video. Tighten the edges of the dough and place on a sheet pan covered with parchment paper.
Brush with the egg yolk mixture and sprinkle a little sesame and crushed red pepper on top. Bake for 15-20 minutes until golden.