How the Chile Pepper Changed Global Cuisine

The next time you take a bite of a spicy Indian or Thai curry, or any dish made using Hungarian paprika, know that you’re tasting one of the most enduring legacies of the Columbian Exchange: the chile pepper.

Few crops have traveled as far and wide. Within 200 years of Christopher Columbus’ first voyage, this fiery fruit had spread from the Western Hemisphere to Asia, Africa, Europe and the Middle East. Its global span is one of the best examples of how the Columbian Exchange changed what—and how—the world eats.

Chile peppers belong to the genus Capsicum, and archaeological evidence shows that Indigenous peoples in the Americas were cultivating and using them thousands of years before Europeans arrived.

“The chile pepper originated in the Western Hemisphere and was one of the first plants to be domesticated and cultivated” there, says Paul Bosland, regents professor of horticulture at New Mexico State University who is also known as the “Chileman” due to his extensive and internationally recognized research on chiles. A handful of Capsicum seeds, estimated to be 7,000 years old, were found in a South American cave. “Because the seeds are similar in size to the seeds of the domesticated Capsicum baccatum grown in Peru, it is theorized that the chile pepper is one of the oldest domesticated crops,” Bosland explains.

According to research by Katherine Chiou, a paleoethnobotanist at the University of Alabama, the common chile pepper (C. annuum var. annuum) likely became a domestic crop around 10,000 years ago, if not earlier. Her research also suggests that its birthplace was near present-day Yucatán Peninsula and the southern coastal Guerrero, Mexico.

These wild chiles grew across Mesoamerica, where Indigenous people began growing them for different flavors and levels of heat. The Aztecs classified chiles by color, heat and use. Their Nahuatl word chīlli, meaning “hot pepper,” eventually became “chili” or “chile.”

“The Spanish wrote that they encountered dozens and dozens of chile pepper varieties,” Bosland says. “For example, jalapeño, serrano, pasilla, ancho, habanero and aji amarillo are examples of pre-Colombia pod types.”

But they didn’t just use these peppers in food. Peppers also became important as medicine, money and even weapons.

When Columbus set foot in the Caribbean in 1492, he was looking for a western route to Asia in search of spices. He was specifically searching for black pepper, which was extremely expensive.

When he got his first taste of a chile pepper, he compared its flavor to black pepper. “The heat of chile peppers resembled the heat of black pepper,” Bosland explains. But chile peppers were much cheaper and “added a new sensation when eating.” Columbus called it “pepper” and took pods back to Spain.

Then came the Columbian Exchange, the massive transfer of plants, animals, people and diseases between the Americas and the Old World after 1492.

The chile pepper proved remarkably mobile. Portugal played an especially important role in moving chile peppers through its expanding maritime trade networks. From the Americas, chiles traveled to Europe and Africa and Asia, where farmers and cooks experimented with the plant.

“During the Columbian Exchange, the Old World and the New World were significantly impacted in many ways,” Bosland says. “The exchange of foods is a key example [of] how the transfer of materials back and forth changed societies.”

Take China. Today, chile peppers are so much a part of the Sichuan and Hunan cuisines that it’s easy to forget peppers didn’t originate there. But there’s no evidence of chiles in China before the 1570s, when they arrived from the Americas. Once there, though, the plant thrived in different regions, and the pepper influenced existing Chinese culinary and medicine traditions.

The same basic story unfolded elsewhere.

Bosland says Hungary is now famous for its paprika, a spice made from ground chile peppers. It’s synonymous with Hungarian dishes like goulash and stews, which show how chile peppers reshaped European culinary traditions.

Soon chiles became essential to regional Indian, African and Spanish cuisines.

Part of the chile’s success comes from its versatility. Chiles are easy to grow, affordable and offer cooks a complex flavor profile that is smoky, sweet, earthy and hot. They can also be used fresh or dried, ground into powders, added to sauces or simply to add heat.

Before 1492, cooks in India, China and much of Africa and Europe had never had a product of the Capsicum genus. After the introduction of the chile pepper, these cultures developed spicy dishes that became central to their identities. The chile eventually became Chinese, Indian, Thai, African, Hungarian, Spanish and American.

Today, there are 22 known wild chile pepper species and five domesticated, including the annuum, chinense, frutescens, baccatum and pubescens. The C. annuum species includes the jalapeño, poblano and hundreds of other varieties.

Every chile pepper has a different heat profile that is created by the specific type and amount of capsaicinoids it contains, Bosland explains. Each profile has five elements. The first, he says, is how fast the heat develops. Then it’s whether the heat feels sharp or flat. Next, though subtle, is where you feel it—your mouth, lips, the back of your throat, for example—followed by how long the heat lasts.

The last element is the level or intensity of heat. “This is the characteristic we prefer to describe as a number measured in Scoville heat units,” Bosland says. “I like to compare the heat sensation to salt. Both add a nice level of ‘tastiness.’ However, too much of either and the dish is ruined.”

Lacking nutritional value, chile peppers add an experience to our diets, not substance. Every person has a unique reaction to them. If you sweat from the intense spice, that’s because your brain is getting signals that you’re hot, so your body tries to cool itself by sweating.

Your brain is also being “tricked” by the burning sensation in your mouth, so it releases endorphins to trigger a rush of the “feel good” chemical dopamine. After the pain fades, those endorphins linger, and you’re left with a mildly euphoric “chile high” that probably has you reaching for more—just like centuries of our ancestors were.