The ancient Greek kitchen was centered around simplicity and freshness. While they didn't have a built-in slushie machine, they had a popular drink called 'symposium.' This drink was made by mixing wine with water and adding various fruits and herbs for flavor. The Greeks would chill this mixture by placing it in a shallow bowl surrounded by ice or snow. The result was a refreshing and slightly slushie-like beverage that was enjoyed during social gatherings.