The ancient Viking kitchen was centered around hearty and nourishing meals. While they didn't have a built-in slushie machine, they had a unique way of making a refreshing drink called 'mead.' Mead was made by fermenting honey with water and adding various fruits or herbs for flavor. The Vikings would chill this drink by placing it in a cold stream or burying it in snow. The result was a cool and slightly slushie-like beverage that was enjoyed during celebrations.