This article examines the nature of sociability, communication and the ‘practical public sphere’ of Hamburg's early coffeehouses (1677–1714) and provides insight into the ‘social life’ of these coffeehouse spaces during the ‘early’ Enlightenment. Using licensing records, administrative sources and supplications, it shows how novelty, popularity, political partisanship and fashionability were characteristic of these early coffeehouses, creating a fluid and capricious dynamic of custom and communication that stressed established notions of honourable sociabilities and communication in urban public spaces. It argues that these destabilizing social and communication practices led to social stratification and a redefinition of ‘honourable’ burgherly behaviour in the normative public sphere. Strategies to govern the coffeehouses sought thus to bind these spaces and their actors to this newly articulated ‘normative’ burgherly public sphere.