In a 6-qt pot, add olive oil place over medium heat. Add diced onion and saute until translucent.
Add chicken stock and bring up to a simmer.
In a blender, add egg yolks, lemon juice, ½ cup of cooked rice, and 1 cup of the hot stock. Puree until smooth.
Pour this pureed mixture into the simmering stock and add in the rest of the rice and your chicken. Simmer until it has thickened to desired consistency, appx. 10-15 minutes.
Season with salt and pepper to taste, along with your fresh chopped dill. Stir and serve.
Notes
Be careful to not allow soup to boil, or you may curdle your eggs.