"An Atlanta-based chicken-sandwich chain is testing a new limited-time beverage called the 'frosted key lime' in Austin, Texas. The small-sized frozen treat, priced at $3.39, blends lemonade, vanilla soft serve, and sugar-free lime flavoring; its pleasant pale green color comes from a mix of spirulina and turmeric, which the chain's chef Christy Cook says are rich in nutrients and associated with health benefits." - Chris Fuhrmeister