Pea soup

Lore & Background

Pea soup has been eaten since antiquity; it is mentioned in Aristophanes' The Birds, and according to one source the Greeks and Romans were cultivating this legume about 500–400 BC. During that era, vendors in the streets of Athens were selling hot pea soup. Eating fresh 'garden' peas before they were matured was a luxurious innovation of the Early Modern period: by contrast with the coarse, traditional peasant fare of pease pottage (or pease porridge), Potage Saint-Germain, made of fresh peas and other fresh greens braised in light stock and puréed, was an innovation sufficiently refined that it could be served to Louis XV, after whose minister, the Comte de Saint-Germain, it was named.

Reader's Guide

Pea soup has a long history and wide cultural significance. In Britain, pease pudding was a high-protein, low-cost staple of the diet and, made from easily stored dried peas, was an ideal form of food for sailors, particularly boiled in accompaniment with salt pork, which is the origin of pea (and ham) soup. In 19th-century English literature, pea soup is referred to as a simple food and eating it as a sign of poverty. In the Netherlands, erwtensoep (also called snert) is a thick stew of green split peas, different cuts of pork, and vegetables, traditionally eaten during the winter and emblematic of Dutch cuisine. In Sweden and Finland, consumption of pea soup dates back to at least the 13th century, and is traditionally served on Thursdays, said to originate in the pre-Reformation era as preparation for fasting on Fridays. One of the first instant products was a pea soup product called Erbswurst, invented in 1867 by Johann Heinrich Grüneberg, who sold the recipe to the Prussian state; during the Franco-Prussian War, the war ministry produced between 4,000 and 5,000 tons of it for the army.

Did You Know?

• Pea soup is mentioned in Aristophanes' The Birds.
• The Swedish king Eric XIV (1533–1577) is said to have died after eating arsenic-poisoned pea soup, though it is not proven that the arsenic was added to a pea soup.
• In the Royal Dutch Navy, pea soup with small cubes of lard is called 'Snert met Drijfijs' (pea soup with floating ice).
• A soup made with yellow split peas is called 'London particular', after the thick yellow smogs for which London was famous until the Clean Air Act 1956.

Ancient Origins and the Rise of Refined Pea Cuisine

Pea soup is one of the oldest prepared foods in the Western culinary record. The Greek playwright Aristophanes referenced it in his comedy The Birds, and historical sources indicate that both Greek and Roman civilizations were cultivating the legume—always a cultivar of Pisum sativum—by roughly 500 to 400 BC. In those early centuries, street vendors in Athens ladled out hot bowls of pea soup to passersby, making it a genuinely everyday food. For centuries afterward, the dish remained firmly in the realm of peasant sustenance, known across Europe as pease pottage or pease porridge: a coarse, thick preparation of dried peas that sustained laborers and sailors alike. The transformation of pea soup into a refined delicacy came only in the Early Modern period, when eating fresh, immature garden peas was considered a luxury. Around 1660 to 1680, a dish called Potage Saint-Germain—fresh peas and other greens braised in light stock and puréed smooth—was deemed elegant enough to grace the table of Louis XIV at the Château de Saint-Germain-en-Laye, after which it took its name. That single innovation marked the moment pea soup crossed from humble staple to courtly fare.

A Global Table: Regional Variations

From the thick green split-pea stew of the Netherlands to the creamy, garlic-and-marjoram preparation of the Czech Republic, pea soup takes remarkably different forms across cultures. In the Dutch tradition, erwtensoep—also called snert—combines green split peas with various cuts of pork, celeriac, onions, leeks, carrots, and often potato, finished with slices of rookworst smoked sausage. It is a winter emblem of Dutch cuisine, typically accompanied by Frisian rye bread and katenspek, a bacon that has been cooked and then smoked. In Québec, soupe aux pois uses whole yellow peas with salt pork and herbs; the pork is either chopped back into the pot or sliced thin and served on the side. Newfoundland's version adds diced turnips and carrots and is often crowned with small dumplings called dough boys. In Australia, the pie floater—believed to have originated in Adelaide in the 1890s—drops a meat pie into thick pea soup made from blue boiler peas, sometimes with a splash of tomato sauce. Even Indonesia, a former Dutch colony, inherited the dish under the names sup ercis or erwtensoep, a testament to how colonial trade routes carried a humble legume across oceans.

Literature, Class, and Cultural Identity

In Britain and Ireland, pea soup carries cultural weight well beyond the kitchen. The nursery rhyme "Pease Porridge Hot" has a first known written reference dating to 1765, and the word "pease" is the Middle English singular and plural of "pea"—the modern word is a back-formation. Pease pudding, made from easily stored dried peas, was a high-protein, low-cost staple that sustained sailors, often boiled alongside salt pork, the origin of the classic pea-and-ham soup. Although potatoes displaced peas as a dietary staple during the nineteenth century, the dish persisted as mushy peas, the standard accompaniment to fish and chips. In nineteenth-century literature, however, pea soup was a marker of poverty. In Thackeray's A Little Dinner at Timmins's, a character's wife responds to a dinner invitation with "a look of ineffable scorn" because the last time she visited, "there was pea-soup for dinner." In Hardy's Tess of the D'Urbervilles, Tess notes that her family's old silver spoon, worn thin, is used "to stir the pea-soup." Even the yellow-split-pea variety earned the nickname "London particular," a wry nod to the thick smog that blanketed the city until the Clean Air Act of 1956.

From Battlefield to Supermarket: The Industrial Legacy

Pea soup's story extends into the world of military logistics and early food industrialization, most dramatically in Germany. In 1867, Johann Heinrich Grüneberg invented a product called Erbswurst—literally "pea sausage"—consisting mainly of pea meal and beef fat, designed as an instant food. He sold the recipe to the Prussian state, and when the Franco-Prussian War erupted, the war ministry, which had previously tested the feasibility of feeding soldiers solely on instant pea soup and bread, constructed a large manufacturing plant. During the conflict, that facility produced between 4,000 and 5,000 tons of Erbswurst for the army. In 1889, the Knorr instant-food company purchased the license and continued production for decades. Knorr, now a Unilever brand, ultimately discontinued Erbswurst on December 31, 2018, closing a chapter that had spanned over a century. Today, pea soup remains a common dish throughout Germany, often served with bacon, sausage, or Kassler—cured and smoked pork—depending on regional preference, with several sausages and dark bread on the side. Ready-made canned versions are still a practical shortcut for home cooks, a quiet echo of that nineteenth-century innovation that first put a legume on the battlefield.

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