Peel and finely dice the shallots and fry them in 1 tablespoon of hot oil. Deglaze with white wine and 400 ml water. Bring the liquid to the boil, add the crab soup paste and boil down for 10-15 minutes, stirring frequently.
Cook the pasta in boiling salted water for 10-12 minutes. In the meantime, wash the cod, dab dry and cut into medium-sized pieces. Peel prawns, remove intestines. Wash the prawns, rinse and pat dry.
Season the cod and prawns with 1-2 tablespoons of lemon juice, salt and pepper. Fry in 2 tablespoons of hot oil for 2-3 minutes on each side. Wash the tomatoes, dab dry, quarter them, remove seeds and cut into fine cubes.
Season the sauce with salt, 1 tablespoon lemon juice, pepper and 50 g cream. Drain the pasta and quench briefly. Arrange noodles with cod, prawns and sauce on plates. Sprinkle with tomato cubes and garnish with dill tips as desired.