1. Prepare the Smoked Sausages:

   Remove the skin from the smoked sausages and chop them finely.

2. Fry the Sausages:

   Heat a saucepan with a tablespoon of oil and fry the chopped sausages until they develop some color. Remove them from the pan and set aside.

3. Prepare the Vegetables:

   • In the same pan, add the chopped onion and sauté until translucent.
   • Add the sliced and grated carrots, diced peppers, and diced celery. Sauté for a few minutes until slightly softened.

4. Prepare the Beans:

   Trim and slice the yellow beans. Add them to the pan with the other vegetables.

5. Combine Ingredients and Boil:

   • Return the cooked sausages to the pan with the vegetables.
   • Pour in 2 liters of water and mix well. Bring the mixture to a boil and let it simmer until the vegetables are tender.

6. Prepare the Sour Cream:

   • In a large bowl, mix the egg yolks with a pinch of salt.
   • Gradually add the liquid sour cream, stirring continuously to incorporate.

7. Combine Sour Cream with Soup:

   • Ladle about 5 scoops of hot soup into the sour cream mixture and stir well.
   • Gradually pour the sour cream mixture back into the soup, stirring continuously.

8. Season and Serve:

   • Season the soup with salt and pepper to taste.
   • Sprinkle generously with chopped parsley before serving.

Step by step instructions in the video below