How McDonald's makes its menu

How McDonald's makes its menu
How McDonald's makes its menu   

Fast food giant McDonald's has a delicate balancing act to strike—delivering items for evolving consumer tastes while also keeping menu complexity under control.

Recently, the Golden Arches axed certain less popular items from its operations following concerns its menu had grown bloated.

So how exactly does McDonald's craft its menu? CNBC lifts the veil on its test kitchen to hear more about the development of new items.