For thirty-four years, in the country the holiday is named for, one good way to get a legal pint on March 17 was to go and look at the dogs. Or so the story goes. From 1927 the Irish Free State shut the pubs on St. Patrick’s Day, putting the ordinary licensed trade in the same bracket as Christmas Day and Good Friday: no permitted hours at all. It stayed that way until 1961. What the law left were side doors. A hotel or restaurant could pour for you if you ordered a proper meal with it, and a registered sports club — defined loosely enough to cover almost any society organized around an outdoor pastime — could serve its members between one and eight in the afternoon. Irish lore holds that the place to use that second door was the Royal Dublin Society’s annual dog show, which drew writers and politicians alongside the dog fanciers, all of them there, more or less, for the bar.
That is the opposite of the holiday the world now keeps. The green beer, the parade, the rivers of Guinness — none of it was made in Ireland, and for a long stretch of the day’s history Ireland thought so little of the drinking that it legislated against it.
A loophole in the fast
To see how a solemn holy day became a worldwide excuse to drink, start with the fast it sat inside. March 17 falls in the middle of Lent, and for a Catholic that used to mean something concrete. Lent was forty days of self-denial — no meat, no rich food, for the devout no drink. It ran from Ash Wednesday to Easter and it was kept, in Ireland, with a seriousness that is hard to picture now. Into that long gray stretch of abstinence fell the feast of the country’s patron saint, and on a feast day the rules came off.
Patrick himself was a fifth-century missionary, a Romano-British teenager carried off to Ireland as a slave who escaped, became a bishop, and returned to convert the island. He is held to have died on March 17, somewhere around the year 461, and the Irish church kept his memory for centuries. But the date became a formal feast on the universal calendar of the Catholic Church surprisingly late — in the early 1600s, by the usual account in 1631, through the lobbying of Luke Wadding, a Franciscan scholar from Waterford who sat on the Roman commission revising the Church’s prayer book and made sure his island’s saint got his day.
A feast day during Lent was a release valve. For one day the abstinence lifted, and people ate meat and drank. The custom even had a name: the Pota Phádraig, Patrick’s Pot, the drink taken in the saint’s honor. At the end of the night came the ritual of “drowning the shamrock” — the sprig of green worn on the coat was dropped into the last glass of whiskey or ale, then either swallowed with the drink or tossed over the shoulder for luck.
This was not a bacchanal. It was a church-in-the-morning, dinner-in-the-afternoon kind of day, a brief, sanctioned warmth in the cold middle of the fast.
Ireland kept it small
For most of its long life the holiday stayed that modest — a holy day, observed quietly. That is the context for the dog show. When the Irish Free State got around to legislating the day’s drinking, it legislated against it, and for thirty-four years the most reliable pint in the country came, by legend, with a side of greyhounds.
The official Dublin parade, when it finally arrived in 1931, was a restrained civic affair. The day had only become a public holiday in Ireland at all in 1903, by an act of the United Kingdom parliament.
The loud, green, beer-soaked St. Patrick’s Day the world now knows was made by people who had left.
The diaspora rebuilds the day
When Irish Catholics poured into the cities of the United States in the nineteenth century — between 1820 and 1860 more than a third of all immigrants arriving in America were Irish — they landed in a Protestant country that did not want them. Anti-Irish and anti-Catholic prejudice was open and ordinary. In that climate, the saint’s day became something the religious feast back home had never needed to be: a public demonstration. To march down a city street in green, by the thousands, was to take up space and announce that the community was large, organized, and not going anywhere.
The parade became the engine of the holiday. Irish soldiers in the British army had marched in New York as early as 1762; by 1851 the city’s Irish societies had merged their separate processions into one, and the New York parade grew into the largest in the world. Stripped of the Lenten context that had defined the day in Ireland, the celebration in America kept the one element everybody could share — the feasting and the drink — and made it the whole point.
Corned beef and green beer
Even the food was an American invention. In Ireland the festive meat had been bacon, cured pork; beef was an export crop, and the people who raised it could not afford to eat it. In America that arithmetic flipped — wages were better and beef was cheap. In the crowded immigrant neighborhoods of New York’s Lower East Side the Irish lived alongside Jewish butchers selling salty, kosher corned beef, cured from brisket. It tasted close enough to Irish bacon, and cabbage boiled in the same pot made the whole dinner cheap. The substitution stuck, and corned beef and cabbage — a dish most people in Ireland had never eaten — became the “traditional” St. Patrick’s Day plate.
Green beer was younger and stranger still. The first widely credited batch was poured in 1914 at the Schnorrer Club in the Bronx, the work of Thomas Hayes Curtin, a New York coroner. His coloring agent was a drop of “wash blue,” an iron-based laundry whitener. It was not Irish, it was not old, and it was, by any sober measure, faintly alarming. It became a fixture anyway.
What the loophole grew into
The day kept expanding outward from the immigrant cities until it circled back to its source. Modern Ireland eventually leaned into the version its diaspora had built, turning Dublin’s parade into a multi-day festival aimed in part at the tourists who arrive expecting the American holiday. Today something on the order of thirteen million pints of Guinness are estimated to be poured worldwide on March 17, a good share of them in countries with no Irish population to speak of. In America, beer sales that day are reckoned to jump by about 174 percent over the rest of the year.
The whole sprawling thing still rests on the original mechanism: a fast, and one day inside it when the fast was allowed to break. The religion supplied the calendar and the permission; the emigrants, far from home and with something to prove, supplied the noise.