Original, National Museum Athen
The following link will take you directly to the original image of the National Archaeological Museum in Athens via Wikipedia (please scroll down a bit):
de.wikipedia.org/wiki/Gr%C3%A4berrund_A
Mycenaean bull's head rhyton from the so-called cemetery A in Mycenaeus, dated 16th century BC, National Archaeological Museum Athens
The castle and town of Mycenae in northern Argolis (Peloponnese) was one of the centres of Mycenaean culture named after it in the 2nd half of the 2nd millennium BC. The meaning of Mycenae is reflected in the Greek mythology in many ways. From the beginning of the literary tradition (Homer) many legends are connected with the landscape of Argoli or Mycenae.
A rhyton (Greek "drinking horn"), a sacrificial vessel, also a drinking vessel, usually made of metal or burnt clay, often in the form of a funnel-shaped shape, often in the form of an animal or human head, with a neck and handle, was used for sacred and profane purposes.
Drinking offerings (Greek sponde, hence "donation", Latin libatio) were usually offered together with other, mostly bloody sacrifices and also in the cult of the dead. The liquids presented were mostly wine, water, milk and oil. The libation was poured out at the beginning and end of the sacrifice and on the burning sacrificial animals.
Also in the secular realm, a libation was poured out of every potion at the beginning, at the meal after the meal.
Contrary to the libation, I think it's the feces' subscription. The symposium (Greek "binge"), drinking, drinking and drinking was usually held after a meal. Often the Kottabos, a cheerful Greek board game, where the rest of the wine had to be thrown out of the drinking vessel against a glass lying loosely on a stand so skillfully that it fell down loudly, was integrated. Or a bowl floating in a water basin had to be hit and sunk.