See Oswyn Murray, “War and the Symposium,” in Dining in the Classical Context, ed. W.J. Slater (Ann Arbor: Univ. of Michigan Press, 1991), p. 101, n. 24. Athenaeus 10.426d quotes an ancient proverb on this subject: “‘Drink either five or three or at the least not four.’ For they say one should drink two parts wine to five of water, or one part wine to three of water.” Plutarch informs us that wine at the banquet table was assumed to be the mixed beverage: “We call a mixture ‘wine’ although the larger of the component parts is water (Conjugalia Praecepta 140F).”