In Germany, there are charming areas outside many restaurants called a "Biergarten" with patio furniture in a garden setting where customers gather around 4pm for an hour or two to relax with either a beer or an iced coffee. This is the typical way an iced coffee is served in the spring & summer at German Beergardens in the Bonn area, where I currently live. It is also a popular choice as a dessert beverage. The measurements are approximate and will vary greatly based on the size of glass used. They also often stick a decorative long toothpick with metallic streamers to garnish as well as the cookie (we think they look like sparklers).