1. Add vinegar to water. 2. Slice liver and marinate in acidulated water for at least one hour. 3. Drain and pat dry. 4. While the liver is marinating, slice the onions and brown them slowly in butter and oil. 5. Add sliced liver and cook on a lively flame. 6. Add salt when they are nearly done, sprinkle it with finely chopped parsley and serve. 7. Buon appetito! ---------------------------------------------------------------------------
Nutrition
Ingredients
