To make the dumpling dough from scratch: Place the flour in a large bowl and add the salt. Pour in the milk and stir with a spatula. Once the mixture starts to come together, use your hands to knead until the dough forms a cohesive ball. Transfer the dough to a floured work surface and knead for 3 minutes or until the dough is firm and bounces back when pressed with a finger. If it sticks, lightly dust the surface with flour and continue kneading. Transfer the dough to a clean bowl, cover with cling film, and let it rest for 30 minutes.
To make the meat filling (hashweh): In a large skillet, sauté the minced lamb over medium heat for about 7 to 8 minutes until well browned. Add the sunflower oil, onions, salt, and black pepper. Stir to combine, reduce the heat to very low, and cover. Simmer for about 5 to 7 minutes until the onions are wilted and the liquid has evaporated. Set aside to cool completely before using.
To form the shish barak dumplings: On a lightly floured surface, roll out the dough using a rolling pin to a thickness of ⅛ inch (about 3 mm). With a cookie cutter, cut the dough into 2-inch rounds, spacing them as close together as possible. Place 1 level teaspoon of the filling in the center of each round. Fold the dough over to form a half-moon, then draw the two corners together and press tightly to seal. Gather and re-roll the scraps, and repeat with the remaining dough.
Bake the shish barak dumplings: Transfer the dumplings to a greased baking sheet, leaving space between each piece. Bake in an oven preheated to 400°F (200°C) until they are lightly browned and crisp on the outside. Remove from the oven and transfer the dumplings to a bowl.
Cook the yogurt: In a large, heavy-bottomed pot, combine the yogurt, egg, and diluted cornstarch, then whisk well until homogenized. Place over high heat and whisk continuously in one direction. The yogurt requires constant attention to keep it from curdling.
Gently add the baked dumplings one by one into the boiling yogurt. Reduce the heat to medium-low and keep it simmering uncovered, stirring gently with a wooden spoon every now and then to prevent the dumplings from breaking. Cook for 20 to 25 minutes to allow the flavors to meld together.
Fry the garlic and cilantro. In a skillet, melt the butter and add the sunflower oil, garlic, and fresh cilantro. Cook over medium-low heat, stirring until fragrant, about 45 seconds. Add to the shish barak pot and stir to combine. It will infuse your shish barak with a delectable scent."
To serve: Transfer to a large bowl or individual soup bowls. Serve warm or at room temperature. Once completely cooled, cover leftovers and refrigerate. Happy eating! Watch the detailed video tutorial above.