Peel, wash and slice the potatoes. Rinse the rice with cold water.
In the boiling broth, lower the potatoes and rice, cook until tender over medium heat.
Peel the onion, slice, fry until transparent.
Cut the pickled tomatoes into slices, add them to the onion.
Add tomato paste, sugar. Simmer over medium or low heat until tomatoes are soft (5-10 minutes).
When the potatoes and rice are ready, add the frying pan, brine, ground black pepper. And, if necessary, add salt. Bring to a boil and turn off the heat. Let the soup brew for 15 minutes.
Serve with sour cream and herbs.