To try a MTN DEW PURPLE THUNDER Froster, locate your nearest Circle K via the store locator.Ībout Circle K and Alimentation Couche-Tard Inc.Ĭouche-Tard is a global leader in convenience and fuel retail, operating in 24 countries and territories, with more than 14,300 stores, of which approximately 10,900 offer road transportation fuel. bottles exclusively at Circle K locations across the nation. In addition to Froster, MTN DEW PURPLE THUNDER is also on Polar Pop and in 20 oz.