public void Cook()
        {
            Bowl bowl = new Bowl();

            Potato potato = GetPotato();
            potato.Peel();
            potato.Cut();
            bowl.Add(potato);

            Carrot carrot = GetCarrot();
            carrot.Peel();
            carrot.Cut();
            bowl.Add(carrot);

            // some code for boiling, etc
        }
 private Bowl GetBowl()
 {
     Bowl result = new Bowl();
     // some code
     return result;
 }