Mix the flour, eggs, semolina, salt and oil with your hands and knead into a homogeneous dough.
Then shape into a plate with the pasta machine and process as thinly as possible (level 5).
Now cut out round circles, e.g., with a thin glass or a cookie cutter.
For the filling, mix the cream cheese, tomato paste and spices (lots of garlic and pepper) and put 1 teaspoon of the filling and 1 small piece of salmon on each sheet of dough. Then place a second sheet of dough on top and press the edges very well with a fork. Do this with the whole dough.
Now cook the ravioli in enough boiling water for about 8 minutes. Important: take it out and cut one to see if the dough is through. Otherwise cook longer.
Finally, take the ravioli out of the water and toss in a pan with hot butter. Grate the lemon zest on the ravioli and toss again, frying lightly.