Vinaigrette with fresh herring or sardines and pickled onions

Boil, chill, peel and slice the potatoes. Cut the carrots into slices and let in with a little water and vegetable oil. Boil, chill, peel and slice the beets. Cut the cucumbers into slices. Cut the onions into rings or half rings, sprinkle with salt, pepper, cumin, put bay leaves, allspice, spices to taste and pour with a mixture of vegetable oil and vinegar. Marinate for 1-
1. 5 hours. Mix potatoes, carrots, beets and cucumbers with sauerkraut, add pickled onions, vegetable oil, salt and sugar. Before serving, add pieces of boiled fresh herring or sardine to the vinaigrette, stir gently. Put the vinaigrette with a slide in a salad bowl, decorate with slices of fish, tomatoes, cucumbers, herbs.