If so, this makes Lemnió the oldest known varietal still in cultivation. The most common style of wine in ancient Greece was sweet and aromatic, though drier wines were also produced. Color ranged from dark, inky black to tawny to nearly clear. Oxidation was difficult to control, a common wine fault that meant many wines did not retain their quality beyond the next vintage. However, wines that were stored well and aged were highly prized: Hermippus described the best mature wines as having a bouquet of "violets, roses and hyacinth." Comedic poets noted that Greek women liked "old wine but young men." Wine was almost always diluted, usually with water (or snow when the wine was to be served cold). The Greeks believed that only barbarians drank unmixed or undiluted wine and that the Spartan king Cleomenes I was once driven insane after drinking wine this way. They also believed that undiluted wine could even kill the drinker: the Gallic chieftain Brennus was recorded as having committed suicide by drinking wine full-strength. Greeks asserted that the dilution of wine with water was a mark of civilized behavior, whose contrast was embodied in the myth of the battle of Lapiths with the Centaurs, inflamed to rape and mayhem because of wine drunk undiluted with water. In addition to its significance as a trade commodity, wine also served important religious, social and medical purposes in Greek society. The "feast of the wine" ("me-tu-wo ne-wo") was a festival in Mycenaean Greece celebrating the "month of the new wine." The cult of Dionysus was very active, if not mysterious, and was immortalized in Euripides's play "The Bacchae". Several festivals were held throughout the year in honor of the God of wine. February's Anthesteria marked the opening of the wine jars from the previous autumn harvest, featuring wine-drinking contests and a procession through Athens carrying wine jars. The Dionysia included theatrical performances of both comedies and tragedies in honor of the God of wine. Wine was a frequent component at the symposium, which sometimes included the game of "kottabos", which involved flinging lees from a wine cup towards a target. The medicinal use of wine was frequently studied by the Greeks, including Hippocrates, who did extensive research on the topic. He used wine as a cure for fevers, to ease convalescence and as an antiseptic.