In France, café au lait means coffee with milk. Half drip coffee, half just-under-boiling milk, it's traditionally served in a bowl. The New Orleans custom of adding chicory to coffee began as a way to stretch coffee supply when shipments were cut off during the American Civil War. Chicory lends subtle chocolate flavors to this drink.
Heat coffee concentrate and milk in a 12-ounce steaming pitcher. (Do not boil.) Pour into mug and dust with a touch of cinnamon.