Boil the potatoes. To do this, pour 2 liters of water into a saucepan, add diced potatoes, salt, put on medium heat and cook until half-ready for about 5-7 minutes.
Prepare the frying. Place the frying pan on medium heat, pour in vegetable oil, add chopped carrots and onions. Lightly fry. Then add chopped mushrooms to the same frying pan and fry together with carrots and onions until golden brown.
Proceed to the final stage of preparing the soup. Add the fried mixture of mushrooms, carrots and onions to the pot with the potatoes. Add a little salt, bay leaf, ground coriander and cook for another 10-15 minutes until the potatoes are ready.