Russian
Put the unpeeled beets in a pot of water, bring to a boil and simmer until a knife slides in easily, 50-60 minutes.
In a separate pot, boil the unpeeled potatoes and carrots until tender, 20-25 minutes. Cool all the vegetables completely, then peel them.
Cut the beets into 1 cm cubes, put them in a large bowl and toss with 1 tbsp of the oil so they stain the other vegetables less.
Cut the potatoes, carrots and pickles into 1 cm cubes and finely chop the onion.
Squeeze the sauerkraut to remove excess brine and chop it if the strands are long.
Add everything to the beets, pour over the remaining oil, season with salt and mix gently.
Chill for 30 minutes before serving.