Breakfast-only hash browns meet the Big Mac and fries. Two of the best items on the McDonald's menu, hash browns and fries, are finally united in one sandwich. Consider this a McDonald's homage to the famed fries-as-toppings Primanti sandwich in Pittsburgh. There's textural variety from the crisp fries and the greasy, soft hash browns with the crunchy gold exterior.
The height means that the Big McCarbMac is a press-it-down kind of sandwich. You'll want extra special sauce to help get all the starch down, but for carb lovers, it's an improvement on the sandwich, with fried potato in every bite.