Since the chain doesn't carry soft serve or ice cream, the soda comes topped with vanilla shake.
Arby's drink fountains now serve Coca-Cola, Coke Zero Sugar, Diet Coke, Sprite, Minute Maid Light, Mello Yello, Barq's Root Beer, Hi-C Flashin' Fruit Punch, Fanta Orange, and Powerade Mountain Berry Blast.
Photo via Arby's.