Knead butter, 1 teaspoon lemon juice, lemon pepper and some salt. Pour up to 1 tbsp. into a piping bag with star-shaped spout and squirt 4-6 tuffs onto a flat plate. Or shape the butter into a roll. Chill for at least 2-3 hours
Wash the salmon, pat dry and cut into 4-6 slices. Sprinkle with rest of lemon juice
Clean the leek, peel the carrots and wash both. Cut vegetables into long, thin strips. Cook the pasta in plenty of boiling salted water for about 8 minutes (see package instructions)
In the meantime season salmon with salt. Heat the remaining butter. Fry the salmon for 4-5 minutes on each side
Drain the pasta. Heat the cream and vegetables in a saucepan. Simmer for 1-2 minutes and mix in the noodles. Arrange the salmon on top, place a butter tuff or thaler on each and garnish