Cook the spaghetti in plenty of boiling salted water for 8-10 minutes. drain
Wash the salmon, dab dry and dice coarsely. Clean, wash and chop the spring onions. Peel and finely dice the onion
Heat 1 tablespoon of butter in a frying pan. Fry the salmon for 2-3 minutes. Season with salt, pepper and lemon juice. Steam spring onions briefly. Take out both
Heat 1 tablespoon of butter in the frying fat. Sauté the onion in it. Stir in tomato paste and flour, sweat briefly. Stir in 200 ml water, cream and stock. Bring to the boil and simmer for about 5 minutes. Season to taste
Place the noodles as nests on a small greased baking tray (approx. 25 x 30 cm). Spread salmon and spring onions on top. Pour sauce over them. Sprinkle with cheese. Bake in the preheated oven (electric cooker: 225 °C/ convection oven: 200 °C/gas: level 4) for approx. 12 minutes. Garnish with lemon and herbs
Drink: cool white wine