In a mixing bowl, combine the flour and salt. Gradually add water and knead until you get a smooth and elastic dough. Cover the dough with a damp cloth and let it rest for about 30 minutes.
In a bowl, mix the ground beef or lamb, finely chopped onion, minced garlic, ground cumin, ground coriander, ground black pepper, paprika, salt, and chopped parsley until well combined.
In a bowl, mix the plain yogurt with the minced garlic, dried mint, and salt. Set aside.
In a skillet, heat the vegetable oil over medium heat. Add the finely chopped onion and sauté until golden brown. Add the minced garlic and cook for another minute.
Stir in the tomato sauce, ground turmeric, ground coriander, ground cumin, salt, and pepper. Simmer for about 10-15 minutes. Remove from heat and set aside.
Roll out the dough on a lightly floured surface until very thin. Cut the dough into 3-inch squares. Place a small spoonful of the meat filling in the center of each square.
Bring the corners of the dough together and pinch to seal, forming small packets.
Place the mantu in a steamer basket lined with parchment paper or lightly greased. Steam for about 20-25 minutes, or until the dough is cooked through and the meat is done.
Place the steamed mantu on a serving platter. Spoon the garlic yogurt sauce over the mantu, followed by the tomato sauce. Garnish with additional chopped parsley if desired.
Enjoy your meal!