Cook the pasta until al dente and then let it cool down. Mix the tuna oil with mayonnaise, milk, Tabasco, soy sauce and shish kebab sauce, season with salt, pepper, sugar and both types of paprika. Fold the marinade into the cold pasta. Then add the diced peppers and tomatoes, the onions (I cut them into rings) and the tuna and mix everything together well. The salad tastes best when it can soak in the fridge for a night. Before serving, it is essential to season again and then sprinkle with parsley!