Boil potatoes in salted water until tender, cut into pieces.
Boil asparagus in salted water for 10 minutes.
Onion cut into half rings, pour boiling water, add salt, sugar and vinegar, marinate for 10-15 minutes.
Finely chop the cabbage, knead it with salt in a deep bowl and leave for 10 minutes, then add the chopped cucumbers (peel the cucumbers), potatoes, pickled onions, asparagus, season with mayonnaise, mix.
Taste for salt, add salt if needed.
Top with salad, sprinkled with finely chopped green onions.