The History of Chilis Part 1: Ají - The magic plant of the Amazonas
by CBS Founder Jono Reilly

Anyone reading this blog is likely to think of themselves as something of a chili fan. But even if you put chilis or hot sauce on every meal, have a selection of superhots growing on your balcony, and haven’t had a pleasant bathroom experience in several years, you will still never be as much of a chili lover as the average human who lived in Central America four thousand years ago. Those spicy pioneers seem to have included the spice of life into almost every part of their existence, from food, to culture, religion and as an integral part of their very identity.

Long before chili peppers transformed the cuisines of India, China, Southeast Asia, and Europe, they were already deeply woven into the lives of the Indigenous peoples of South America. Archaeological discoveries show that domesticated capsicum peppers had been cultivated on the continent for thousands of years before Europeans arrived, while ethnographic and historical evidence suggests that they occupied a place extending well beyond the kitchen. To many Indigenous societies, chili peppers were food, medicine, protection, and a source of spiritual power. Their pungency was not simply a culinary characteristic - it was an active force capable of shaping the body, influencing the spirit, and reinforcing the bonds between people and the natural world.

The genus Capsicum originated entirely in the Americas, and South America was one of its principal centers of domestication. Archaeological evidence from Ecuador indicates that people were processing chili peppers at least 6,000 years ago, while excavations in Peru have uncovered preserved pepper fruits and seeds dating back nearly 4,000 years. By the time the first European ships reached the continent in the late fifteenth century, just about 500 years ago, numerous cultivated varieties were already established throughout the Andes, the Amazon basin, and the tropical lowlands. The culture and tradition of chili was already in use by native Central Americans at a time when Neolithic Europeans were eating mostly forrest berries, tree fruits, wild grasses and game. In Europe, those at the coast could maybe enjoy fish and seafood, while agricultural grains, and the domestication of cattle and sheep were basically crazy new startup ideas.

Exotic ingredients like potatoes, tomatoes, and corn only made their way to Europe along with the chili pepper 500 years ago, and even they took a long time to catch on. Just imagine what the Italian diet was like at the time, three thousand years before the roman empire, without a single strand of spaghetti (the first signs of primitive pasta appeared about 1,600 years ago), and not a single tomato within 10,000km.

The archeological discoveries in the Amazon basin reveal that chili peppers were not a recent innovation but one of the foundational crops of Indigenous agriculture. Like maize, beans, squash, potatoes, and quinoa, they formed part of a sophisticated agricultural system that had developed over millennia. Their remarkable diversity also suggests deliberate selection for flavour, colour, size, and pungency, indicating that ancient farmers valued peppers for multiple purposes rather than merely as a seasoning.

Chili as a Staple of Everyday Life

Perhaps the most obvious role of chili peppers was in daily cooking. Archaeological remains recovered from ancient settlements in Peru demonstrate that peppers regularly accompanied staple foods such as maize, potatoes, beans, and fish. Early Spanish observers consistently remarked that Indigenous communities used ají—the Taíno word that entered European languages—to season nearly every meal.

Yet to separate food from culture would impose a modern distinction that did not necessarily exist in Indigenous societies. Across much of South America, communal meals reinforced family relationships, social obligations, and political authority. Feasting accompanied important events such as marriages, alliances, seasonal festivals, and funerary observances. Because chili peppers were an integral to the preparation of these meals, they naturally became part of the rituals surrounding them.

The act of sharing spicy food therefore carried social as well as nutritional significance. In many Indigenous traditions, hospitality was demonstrated through food, and peppers contributed to the sensory intensity that distinguished ordinary meals from ceremonial occasions. It seems that chilis were used as a festive ingredient for thousands of years.

Archaeological Clues to Ritual Importance

One important line of evidence for the ritualistic role of chilis comes from ceramic vessels recovered from ceremonial and elite contexts in ancient Peru and neighboring regions. Residue analyses have identified traces of chili peppers in vessels associated not only with domestic cooking but also with feasting, offerings, and burial assemblages. Their presence alongside prestige goods suggests that peppers participated in rituals involving political authority, ancestor veneration, and communal celebration.

Burials also provide indirect evidence of ritual significance. Foods placed with the dead were generally chosen with care, reflecting beliefs about nourishment, remembrance, or the journey into the afterlife. Although peppers rarely appear alone, their inclusion among funerary offerings implies that they formed part of the symbolic provisions accompanying the deceased.

Heat as a Spiritual Force

Ethnographic evidence from Indigenous communities throughout Amazonia provides another window into the cultural role of peppers. Although many of these observations were recorded after European contact, anthropologists have argued that they preserve traditions with much deeper roots.

Among traditional Amazonian peoples, peppers are still believed to possess protective qualities. Their intense heat was thought capable of driving away harmful spirits, guarding homes, protecting hunters, and strengthening individuals against unseen dangers. Rather than viewing the burning sensation as an unpleasant side effect, these societies interpreted it as evidence that the plant possessed genuine power to transform and purify.

Even us modern chili lovers often consider the fruit to have some kind of magical powers: A rush of endorphins, a much needed humbling lesson for the soul, a feeling of overcoming almost unbearable suffering without injury, and the delicious thrill that leaves your tongue craving more when you have to suffer a meal without spice - just imagine what four thousand years of exposure to the magic plant did to the Mesoamerican culture.

Healing and Medicine

In pre-Columbian South America, medicine and religion were often inseparable. Illness could arise from physical causes, spiritual imbalance, hostile forces, or broken relationships within the community. Healing therefore addressed both the body and the spiritual world.

Chili peppers occupied an important place within this medical tradition. They were used to treat digestive complaints, respiratory illnesses, muscular pain, parasites, and infections. Their warming qualities also made them valuable in colder Andean environments.

From a modern perspective, many of these practices appear pharmacologically reasonable. Capsaicin, the compound responsible for a pepper’s heat, stimulates circulation, reduces pain in certain contexts, and possesses antimicrobial properties. Indigenous healers, however, did not separate these physiological effects from their spiritual dimensions. The same qualities that cleared congestion or warmed the body could also restore balance or expel harmful influences.

Ritual Purification and Discipline

Historical accounts from across the Americas suggest that peppers were occasionally used in rites of purification and personal discipline. Their smoke could serve as an irritant during ritual cleansing, while deliberate consumption of extremely hot peppers formed part of certain ceremonial practices.

Although direct archaeological evidence for these rituals is limited, their widespread distribution across Indigenous cultures points to a broader symbolic understanding of pungency. Heat represented change. Enduring it demonstrated resilience, while exposure to it could mark transitions between stages of life or reinforce social expectations. Surviving the discomfort of chili consumption could prepare you for many other hardships that life, especially 4,000 years ago, inevitably involved.

Identity, Exchange, and Community

The diversity of chili varieties cultivated throughout South America suggests that peppers also contributed to regional identity. Communities maintained distinctive local cultivars adapted to different climates and culinary traditions. Exchanging seeds and peppers likely formed part of wider networks linking villages through trade, marriage, and seasonal gatherings.

As with many traditional crops, cultivation itself represented accumulated ecological knowledge passed across generations. Knowing when to plant, which varieties suited particular soils, how to save seed, and how to prepare peppers safely formed part of a broader cultural inheritance. The plant therefore embodied memory and tradition as much as agriculture.