A photo like it (a Wiener Melange in Vienna) · Rüdiger Wölk (CC BY-SA 2.0 de) via Wikimedia Commons · source
The everyday order in Vienna's grand cafés, where the coffee house tradition is on UNESCO's list: a mild long espresso, half steamed milk, a hat of foam, served on a silver tray with a glass of water.
Shot (30 sec): Pull a long double espresso (a Verlängerter in Vienna): about 60 ml from 18 g, either by letting the shot run to 45 g and topping with a splash of hot water, or with a moka pot.
Milk (30 sec): Steam the milk to 60 to 65°C with more foam than a flat white, about a third bigger than when you started, like a cappuccino.
Combine (10 sec): Pour the espresso into a wide 200 ml cup, then the milk, holding the foam back with a spoon, and spoon the foam on top as a domed cap.
Serve (the Vienna way): On a small tray or plate, with the glass of water beside it and a spoon laid over the water glass. Take your time: in a Viennese café a single Melange buys you the table for the afternoon.
Tips
No steam wand? Heat the milk in a pan and froth it in a French press by pumping the plunger 20 times.
An Einspänner is the same long coffee in a glass with a thick cap of whipped cream instead of milk.
Ask for 'ein Glas Wasser' again and it will be refilled for as long as you stay.