How to make
Heat the oil in a saucepan over medium heat. Add the finely chopped onion and fry for about a minute or two, then add a little water and let it boil like that.
When the water evaporates, add the paprika, after a few seconds both the chopped and the scalded dock.
Pour the hot water and spices, let it boil for about 25 minutes (if the dock was frozen) or less (10 minutes if it was fresh).
Wash the rice well under running water several times and add it to the soup. Boil as much as it is necessary to cook the rice.
Put the yolk and yogurt in a saucepan, stir with a wire whisk. Put it on the stove and stirring constantly (with a wire whisk), wait for it to boil (be careful not to burn), then add it to the soup and stir well.
Serve it warm, and if it is thicker, you can also garnish it with yogurt.