Cook the pasta in salted water according to the instructions on the packet.
For the sauce, peel the salami and cut into small cubes. Brown the salami in a pan without oil (don`t let it get too hot) until the fat comes out. In it, sauté the finely chopped onion and the garlic until translucent, adding a little olive oil if necessary. Then let the tomatoes simmer over medium heat. The sauce already has a hearty taste thanks to the salami and you only need to season with salt, pepper, 1 tablespoon of crème fraiche / sour cream and possibly a teaspoon of oregano.
ATTENTION: The most important thing about this sauce is the choice of salami! Salamis with a high percentage of paprika, such as B. the Spanish chorizo, are not so suitable for this dish, as the sauce then becomes slightly bitter due to the paprika. It`s best to try the butcher`s, because the sausage should also have a certain spiciness!