This September, Burger King released an all new "Kuro Burger", which features a black bun, black cheese, and sauce made from squid ink.

McDonald's jumped on the trend in October and started grilling its own black burger. The fast food giant's "Squid Ink Burger" has normal colored cheese and ketchup, so it's a bit more appealing than Burger King's creation.

Why would these companies create such an unappealing item? Who would buy such a thing? It turns out that customers in foreign markets demand much more menu variety than their American counterparts. American fast food restaurants are frequented for their fast service, reliability, and predictability, while the foreign chains are visited for the experience that comes with the meal. A black burger may just be a quirky menu item, but it's sure to get customers talking and mix up the traditional burger experience.

In the states, Taco Bell is making headway with its new breakfast menu and wacky fusion items such as the Waffle Taco. The company just released an all new mobile app as well that allows for increased food customization. So far, Taco Bell's innovation strategy has been propelling them above their competition as the American fast food industry continues to decline and fast-casual spots like Chipotle take over the market.

But then again, places like In-n-Out are sticking with minimal menus. As the Apple Computer of the burger industry, they know what they do well, and there's no need to diffuse their brand with changing menu items. The family-owned chain serves up honest, juicy, premium burgers which most would argue are tastier than McDonald's or Burger King's sandwiches.

So while food innovation reigns supreme abroad and is becoming the fast-food norm in America, the food traditionalists have no need to fear. You'll still be able to get your Double Double with fries and a shake without worrying that squid-ink is going to ruin your meal.

Hypebeast