The history of cocktail culture begins with a simple premise: spirit alone is too much for most occasions, too little for others, and the interval between those two extremes is where every bartender who has ever done interesting work has chosen to operate. The first recorded use of the word cocktail in its modern sense dates to 1806 — a spirit, sugar, water, and bitters — and in the two centuries since, the variations on that formula have multiplied into an entire civilisation of drinks, techniques, and rituals. Here is how that happened, and where you can still taste the different chapters.
Jerry Thomas and the First Golden Age
Jerry Thomas published The Bartender's Guide in 1862, the first comprehensive cocktail manual in history, and in doing so established the profession of bartending as something worthy of documentation and codification. Thomas was famous in his lifetime — he toured Europe performing his signature Blue Blazer, a flaming whisky drink thrown between two cups — and his book defined the canon of American mixed drinks for the 19th century. The Old Fashioned, the Manhattan, the Whisky Sour, the Tom Collins: these drinks were already understood as classics by the time Thomas was writing about them.
This first golden age of cocktail culture was distinctly American, driven by the abundance of rye whisky, the growing quality of American spirits production, and a bar culture in cities like New York and New Orleans that was sophisticated enough to have opinions about technique. Prohibition ended it. When the 18th Amendment took effect in 1920, many of America's best bartenders left for Europe, taking their knowledge with them and planting the seeds of what would eventually become the international cocktail culture.