Design Pattern: Decorator and Waffle

w_w_d.rb

class StrawberryWaffle < WaffleDecorator
  def topping
    'strawberries'
  end
end

class BlueberryWaffle < WaffleDecorator
  def topping
    'blueberries'
  end
end

class BlackberryWaffle < WaffleDecorator
  def topping
    'blackberries'
  end
end