Key lime pie has to be one of the tastiest desserts ever created. The combination of sweet, flaky pastry, the creamy filling, and acidic burst of the key lime perfectly balance together in each mouthful.

Chick-fil-A is taking that combination of flavors and putting it into their newest drink based on the Florida staple.

Photo courtesy of Chick-fil-A

The new Frosted Key Lime features Chick-fil-A's lemonade and vanilla soft serve combined with a sugar-free lime flavoring. A combination of key limes, kaffir limes, and Persian limes is used to add different levels of aroma to the frozen beverage.

A blend of spirulina and turmeric give the drink its slight green hue, according to a press release. Both are recognized as superfoods, but it's unclear how much of each is in the Frosted Key Lime and whether that amount would provide any nutritional benefits. Still, it's an interesting natural source of color that you wouldn't expect from a fast food chain.

Chick-fil-A is testing this drink in the Austin, Texas, area for a limited time. A small goes for $3.39.