private Vegetable PrepareVegetable(Vegetable vegetable)
        {
            Cut(vegetable);
            Peal(vegetable);

            return vegetable;
        }
 private void Cut(Vegetable vegetable)
 {
     vegetable.IsCut = true;
 }
 private void Peal(Vegetable vegetable)
 {
     vegetable.IsPealed = true;
 }
 public void Add(Vegetable vegetable)
 {
     this.Ingredients.Add(vegetable);
 }