Summer is the season of blockbuster movies, weekend barbecues, garden weddings, and, of course, chain restaurants making every attempt to lure in new customers with seasonal cold beverage offerings. This year alone, we saw Starbucks introduce its blended Granitas drinks (only available after 3 pm as a part of its Sunset Menu), Chick-fil-A debut a frozen lemonade, and Checkers and Rally’s whip up six different frozen drinks and smoothies as a part of its new Chill Spot menu.