What Is The Rarest Kool Aid Flavor?
The rarest Kool-Aid flavor is “Boston Cooler” which was a promotion flavor in the 1980s. It was a vanilla cream soda-flavored Kool-Aid only available in Michigan and parts of the Midwest. It was exclusive to the Boston Cooler drink, which is also a Midwestern specialty drink made with vanilla ice cream and Vernors ginger ale. Today it is considered a collector’s item and is extremely hard to find.