7 Wild Facts About McDonald’s Chicken Big Mac Sandwich

Ever wonder what they call the middle bun on a Big Mac?

There's a lot to the Big Mac and McDonald's newest menu item, the Chicken Big Mac.

The traditional Big Mac is a burger with two all-beef patties, special sauce, pickle, lettuce, onion and cheese. The new version of the sandwich swaps out the beef for tempura-breaded chicken patties.

That's a long list of ingredients to put on a sandwich, but it is actually designed to be assembled in less than 25 seconds once the chicken comes out of the fryer.

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It's probably easy to do if you know your way around a McDonald's kitchen. I tried to put one together myself during a recently tasting and press event at McDonald's Chicago headquarters and failed miserably.

From the amount of sauce to what other familiar item uses the same breading, here are 7 wild facts about McDonald's newest menu item.