History & Culture
A modern British one-pot built on a centuries-old Spanish cure, and the story of how the two ended up in the same pan.
Chorizo owes its colour and its smoke to a plant that did not exist in Spain until the late 15th century. Christopher Columbus returned from the Americas in 1493 with, among other things, capsicum peppers, and over the following decades Spanish monasteries began experimenting with drying and grinding them into what became pimentón. The monks of the Monastery of Yuste in the Extremadura region, close to where Emperor Charles V retired in 1557, are widely credited with refining the smoke-drying process that gives pimentón its distinctive depth, smoking the peppers slowly over oak fires rather than sun-drying them as older spices had been. By the 17th and 18th centuries, pimentón had become central to Iberian charcuterie, and chorizo, pork cured and coloured with the new spice, had taken the form still recognised today.
This is what separates Spanish chorizo from its Latin American cousins. Mexican and South American chorizo is typically sold fresh and uncured, seasoned with a different blend of chillies inherited from indigenous cooking traditions that predate the Spanish arrival. Spanish chorizo, by contrast, is a cured sausage, and its identity rests almost entirely on pimentón, either dulce (sweet) or picante (hot), which gives it both its russet colour and its long shelf life.
In Spain, chorizo has long lived a double life: sliced thin as a tapa, crumbled into stews, or eaten simply with bread. It was not, historically, married to chicken in a British-style casserole. That combination is a much newer development, and largely a British one. Spain's own tapas culture only became widely visible in Britain from the late 1980s and through the 1990s, as post-Franco Spain opened up to tourism and a wave of Spanish-influenced restaurants and delis began appearing in British cities. Chorizo followed the same route as olive oil and manchego: a supermarket rarity in the 1980s that had become a fixture of the British weekly shop by the early 2000s.
British cooks, rather than reproducing a Spanish dish, took chorizo as a flavour shortcut and folded it into an existing national habit: the one-pot casserole. Cookery writers and television chefs through the 2000s popularised chicken and chorizo together specifically because the sausage's cured fat and paprika could render into a stew and do most of the seasoning work on its own, no separate spice blend required. The result sits in an interesting position: individually Iberian in its main flavour components, but structurally a British stew, built for a slow oven or a Sunday hob rather than any specific regional Spanish table.
The flavour mechanics of a dish like this come down almost entirely to fat and pigment. Chorizo is roughly a third fat by weight, and that fat carries paprika's fat-soluble carotenoid pigments, capsanthin chiefly among them, which is why a few slices dropped into a hot pan will stain the whole dish a deep orange-red within minutes. Frying the chorizo first, rather than adding it raw at the end, lets that pigmented oil coat the chicken and vegetables that follow, doing more seasoning work than the meat itself.
Saffron plays a smaller but related role. Its compound crocin is another fat- and water-soluble pigment, and in tiny quantities it reinforces the same warm colour chorizo has already established, while its faintly bitter, honeyed aroma sits underneath the paprika rather than competing with it. Turmeric performs a similar visual job for far less cost, and its presence alongside a Spanish-derived paprika and saffron base points to how thoroughly the dish has moved beyond any single national larder. Chickpeas and red lentils are a British batch-cooking instinct rather than a Spanish one: both bulk the pot out cheaply and take on the surrounding colour and spice as they cook, turning a chicken stew into something closer to a substantial, freezer-friendly family meal.
Spain itself has no single ancestor dish here. The nearest relatives are things like pollo al chilindrón, a chicken and pepper stew from Aragón and Navarre, or the countless regional guisos that pair chorizo with beans or potatoes, but none of them are quite this dish, and none of them include lentils or turmeric. What has happened instead is a kind of ingredient migration without a full recipe migration: chorizo and pimentón travelled to Britain as products, decoupled from the specific dishes they came from, and were reassembled here according to British stew logic.
That pattern is common enough to have a rough shape of its own. A defining ingredient crosses a border on its own, usually via trade, tourism or migration, and gets absorbed into whatever the receiving country already knows how to cook, rather than arriving with its original dish intact. Chicken tikka masala followed something like the same route in reverse. Chicken and chorizo casserole is a comparatively young example of the pattern, no older than a few decades, but it is a clear one: proof that a spice or a sausage can travel far more easily, and far faster, than the dish it was born into.
No. Chorizo and pimentón are genuinely Spanish, developed from the 16th century onwards after peppers arrived from the Americas, but this specific one-pot combination of chicken, chorizo, chickpeas and lentils is a British invention, popularised from the 1990s and 2000s as chorizo became widely available in British supermarkets.
Its colour and flavour come almost entirely from pimentón, Spanish smoked or sweet paprika, rather than from black pepper or other spice blends used in most European cured sausages. This is what gives chorizo its distinctive russet colour and smoky depth.
Chorizo is roughly a third fat, and that fat carries the paprika's pigment and flavour compounds. Rendering it early lets the coloured, spiced oil coat the chicken and vegetables that follow, rather than leaving the flavour locked inside the sausage itself.
Most Spanish chorizo is naturally gluten free, made from pork, fat, salt and paprika, but casings and specific brands vary, so it is always worth checking the label if coeliac safety matters.