Peel the onion and garlic and cut into very small cubes and sauté in the heated oil while stirring until translucent.
Now add the wine and the cream and simmer everything slightly thick. Season to taste with salt and pepper and fold in the salmon strips and finally add a splash of lime juice.
In the meantime, cook the tagliatelle for 6 minutes until al dente, place on the plate and serve with the smoked salmon sauce and sprinkle with cress.