
In a frying pan with heated oil, fry the chopped onion until golden brown.

Grind the onion and nuts using a blender, then transfer the resulting mass into a deep frying pan or cauldron, put it on the fire and gradually pour in the broth, stirring the mixture (at this stage, the sauce will resemble liquid sour cream in consistency).

Bring the sauce to a boil over low heat, add salt, vinegar and cook until it reaches the consistency of thick sour cream.

Place the sliced chicken in a serving bowl, add the prepared sauce, stir and serve.