Frappe - instant ice coffee. Drunk by everyone, cheap and refreshing. A "ticket" to sit outside a cafe for hours, like the Greeks
Freddo Cappuccino - an iced cappuccino. Also drunk by everyone and stronger than a Frappe and easier on the stomach.
Ouzo - Greek anise-flavoured liqueur
Mythos- good Greek lager - very swiggable after a long day in the sun and usually quite reasonable