Heat vegetable oil in a pan over medium heat.
Add onion, ginger paste, and garlic paste. Fry until golden brown.
Stir in the minced lamb and add chili powder, salt, coriander, cumin, and turmeric.
Pour beef stock and let the mixture simmer.
Add the jar of Bolognese tomato sauce to the lamb and stir well.
Add the boiled spaghetti to the sauce, mix thoroughly, garnish with fresh cilantro, and serve.