Cook the pasta until just firm to the bite as directed.
During this time, prepare the sauce: clean and wash the leek / leek, then cut into fine rings. Heat the oil in a large pan, fry the minced meat in it until it is crumbly brown. Add the leek rings. Drain the pineapple, save the juice, fry everything for approx. 5 minutes, then deglaze with a little juice. Add curry powder, granulated broth + ground pepper to taste, add ketchup + tomato paste, stir well, add some pineapple juice if necessary.
Cook on low heat for 5-8 minutes with the lid closed. Then add the cream, pour off the pasta + mix immediately with the sauce.