private static void AddToppings(Pizza pizza)
    {
        string toppingsInput = String.Empty;

        while ((toppingsInput = Console.ReadLine()) != "END")
        {
            string[] tokens      = toppingsInput.Split();
            string   toppingName = tokens[1];
            int      weight      = int.Parse(tokens[2]);

            Topping topping = new Topping(toppingName, weight);

            pizza.AddToppingToPizza(topping);
        }
    }