How Tomatoes Reached Italy from the Americas

For most of its history, Italian cooking had no tomato sauce, no pomodoro, no caprese. The fruit that now defines the cuisine arrived as a curiosity from a continent Europeans had only just encountered, and it spent well over a century being treated with deep suspicion before anyone thought to cook it.

Where the Tomato Began

The tomato is native to western South America, where wild varieties grew in the Andes across what is now Peru, Ecuador, and Bolivia. The people who first cultivated it were in Mesoamerica, the Aztecs and their neighbours, who called it tomatl, a Nahuatl word meaning something close to "the swelling fruit". By the time Spanish conquistadors arrived in the early sixteenth century, tomatoes were already a common ingredient in the markets of Tenochtitlan, eaten raw, cooked into sauces, and combined with chillies and squash.

The Atlantic Crossing

Spanish ships carried the tomato back to Europe sometime around the 1520s, likely alongside other New World plants, maize, potatoes, cacao, that would eventually reshape the continent's diet.

The earliest written European record of the tomato appears in the work of Pietro Andrea Mattioli, an Italian physician and botanist, who described it in 1544 as pomo d'oro, the golden apple, suggesting the first varieties to reach Italy were yellow rather than red. His description was botanical, not culinary. He noted the plant existed. He did not suggest eating it.

A Century of Suspicion

For much of the sixteenth and seventeenth centuries, the tomato sat in European gardens as an ornamental plant, admired and left alone. The suspicion had a botanical logic: the tomato belongs to the Solanaceae family, which also contains deadly nightshade and mandrake. European herbalists recognised the family resemblance and concluded the fruit was probably poisonous. Some sources from the period describe it as fit only for decoration.

Others record it being eaten in Spain and southern Italy by the late 1500s, though without enthusiasm and without recipes.There is a persistent story that wealthy Europeans eating from pewter plates were being slowly poisoned by lead leaching into their food when acidic tomatoes were placed on the metal, and that the poor, who ate from wood, survived and kept eating them.

The story is appealing and almost certainly too neat to be entirely true, but the class dimension it points to is real: tomato adoption in Italy moved from the poor and the south northward and upward, not the other way around.

The South Takes It First

By the mid-seventeenth century, Naples and the surrounding region had begun cooking with tomatoes in ways that look recognisable today. Naples was then under Spanish rule, which may have accelerated the transfer of a Spanish-adopted ingredient into local kitchens.

The earliest Italian recipes involving cooked tomatoes appear in Neapolitan cookbooks from the late 1600s, where the fruit is stewed with oil, garlic, and salt, essentially the foundation of what became salsa di pomodoro.

The combination with pasta came later, documented clearly only in the eighteenth century, by which point the tomato had stopped being a curiosity and started being a staple.

How a Fruit Became a Cuisine

The speed of the tomato's eventual adoption, once it took hold, is as striking as the length of its initial rejection. Within roughly a century of its acceptance in Neapolitan cooking, it had spread across the Italian peninsula and begun its outward journey with Italian emigrants to the Americas, the same continent it had come from.

The tomato arrived in the United States in part through Italian immigrant communities, completing a loop that took three centuries.The story of the tomato reaching Italy is really the story of how slowly food cultures absorb the unfamiliar, and then how completely they can.

A plant that spent a hundred years being treated as a decorative poison became so embedded in a cuisine that most people alive today cannot imagine the food without it.