Wash and peel the asparagus, cut off the woody ends and halve. Put asparagus in boiling salted water with 1 level teaspoon of sugar and juice of 1/2 lemon, bring to the boil and cook for about 15 minutes.
Prepare ##noodles## in boiling salted water according to package instructions. Cut salmon into thin strips. Peel onion and chop finely. Melt the fat in a pot and fry the onion.
Stir in flour and sweat briefly. Add stock and cream while stirring. Let the sauce simmer for about 2 minutes while stirring occasionally, then add 2-3 tbsp. lemon juice. Season sauce with salt, pepper and possibly some sugar.
Wash the dill, shake dry and chop the flags finely except for a few flags for garnishing. Stir the chopped ##dill## into the sauce. Add the laughing strips at the end and stir in briefly.
Drain the asparagus and pasta. Add the asparagus to the sauce. Arrange noodles and ##asparagus## in lemon-dill sauce on plates. Garnish with remaining dill flags.