Libation (, , ) was a central and vital aspect of ancient Greek religion, and one of the simplest and most common forms of religious practice. It is one of the basic religious acts that define piety in ancient Greece, dating back to the Bronze Age and even prehistoric Greece. Libations were a part of daily life, and the pious might perform them every day in the morning and evening, as well as to begin meals. A libation most often consisted of mixed wine and water, but could also be unmixed wine, honey, oil, water, or milk.