Wash the potatoes and cook in plenty of boiling water for about 20 minutes. Rinse under cold water, drain and peel. Cut the potatoes into cubes. Boil eggs in boiling water until hard, rinse with cold water and peel.
1 egg to garnish, cut the remaining eggs into eighths and dice them. Peel and wash the carrots, cut them in half lengthwise and slice them. Cook the carrots in a pot with boiling salted water for about 4 minutes. After 2 minutes add peas.
Halve the cucumbers lengthwise and cut into slices. Clean, wash and shake the salad dry and cut into strips, except for 4 leaves for garnishing. For the sauce, stir mayonnaise, sour cream and 4-6 tablespoons of cucumber water until smooth.
Season to taste with vinegar, salt, pepper and sugar. Mix all salad ingredients. Arrange salad with lettuce leaves and egg eights on a plate. Vodka tastes good with it.