an ice cream soda drink made from Vernors and vanilla ice cream, named not after Boston , where Vernors is practically unknown, but after Detroit's Boston Boulevard, where it was supposedly invented

A Boston cooler is a drink typically composed of ginger ale and vanilla ice cream. Variations abound, however, with club soda, sherbet, rum, milk, sugar, or even coffee sometimes added or substituted for the key ingredients. The root beer float, a similar beverage made from vanilla ice cream and root beer is also sometimes called a Boston cooler.