Mushrooms fried with Onion Gravy

Ingredients

 * 1 kg boletuses
 * 1 onion
 * 1 cupful sour cream
 * 3 tbsp fat
 * salt

Directions

 * 1) Wash the fresh small boletuses and dry slightly.
 * 2) Dust the caps with salt and fry for 15 minutes in very hot butter, stirring constantly.
 * 3) Separately put the minced onions in hot butter, add the salt and stew until tender, then add the sour cream, bring to a boil and pour over the mushrooms.