For vegetable broth, you need to use half an onion and half a carrot, pour 700 ml of water and put on the fire.
When the water boils, cook the vegetable broth for 20 minutes under a lid on low heat. After cooking, remove the vegetables from the broth, they are no longer needed for cooking.
Cut the onion into small cubes, grate the carrots, fry, add salt and pepper. Add the diced zucchini and crushed garlic clove, simmer for another 5-7 minutes, then pour in the flour and fry for another 2-4 minutes, stirring constantly.
Add pre-washed rice to the vegetable broth, dilute the sour cream with milk and add it to the soup with rice and zucchini, stir. Break an egg into a container and beat it with a fork. When the rice in the soup is cooked, add a raw egg to the pan and stir. Cook for no more than 15 minutes.