Grate the carrots on a coarse grater.
Cut the potatoes into small 1 cm cubes.
Chop the cabbage into thin strips.
Cut the onion into thin half rings.
Heat vegetable oil in a frying pan. Fry onions and carrots over medium heat for 5-7 minutes until soft and golden.
Bring the broth to a boil and add potatoes, cabbage and buckwheat. Cook the vegetables and cereals over low heat for 15-20 minutes. Periodically remove the foam from the surface of the soup.
At the very end, when the vegetables and buckwheat are ready, add fried onions and carrots to the soup. Salt and pepper the soup to taste. Cook it for another 5-10 minutes.
Buckwheat shchi is ready. Enjoy your meal!