Boil the spaghetti al dente, allow to cool, place in a large bowl, add the oil and stir so that the spaghetti does not stick.
Fry the minced meat in a little oil until brown and crumbly, season with salt and pepper and let cool! Then add to the spaghetti in the bowl. Cut the leek into thin slices, wash well and drain. Then add to the bowl. Season the salad with salt, pepper and Maggi to taste.
A little tip: Better to prepare a day in advance so that everything can flow well.