Prepare the Noodle Dough:

• In a mixing bowl, combine the flour and salt. Gradually add the water, mixing until a rough dough forms. Knead the dough on a floured surface for about 5-7 minutes until smooth and elastic.
• Cover the dough with a damp cloth or plastic wrap and let it rest for about 10 minutes.

Make the Soup Base:

• In a large pot, heat the vegetable oil over medium heat. Add the chopped onion and sauté until translucent.
• Add the minced garlic and cook for an additional minute, until fragrant.
• Stir in the cubed meat and brown on all sides.

Add Vegetables and Spices:

• Add the diced tomatoes, bell pepper, carrots, and optional potatoes to the pot. Cook for about 5-7 minutes, allowing the vegetables to soften.
• Season with soy sauce, cumin, coriander, black pepper, and salt. Stir well to combine.

Simmer the Soup:

• Pour in the water or beef broth, ensuring all ingredients are covered. Bring to a boil, then reduce the heat and let it simmer for about 30 minutes, until the meat is tender and the flavors meld together.

Prepare the Noodles:

• While the soup is simmering, take the rested dough and divide it into smaller portions. Roll each portion into thin ropes or use a pasta machine to create thin noodles.
• Dust the noodles with flour to prevent sticking.

Cook the Noodles:

• In a separate pot of boiling salted water, add the freshly made noodles. Cook for about 3-5 minutes, or until al dente. Drain and set aside.

Assemble and Serve:

• To serve, place a portion of noodles in a bowl and ladle the hot soup over them. Garnish with fresh herbs and additional spices if desired.
• Enjoy your lagman hot, accompanied by crusty bread or a fresh salad.