An Unexpected Asian Ancestry

The story of ketchup doesn't begin in America or with tomatoes, but in Southeast Asia, possibly China or Vietnam, as far back as 300 B.C.. The precursor was a fermented fish sauce called 'kê-tsiap' (from the Hokkien Chinese dialect) or 'kicap' in Malay. This savory, dark, and thin brine, derived from pickled fish or shellfish, was a popular dipping sauce that made its way along trade routes to Malaysia, Singapore, and Indonesia.

A European Transformation: Mushrooms, Walnuts, and Oysters

British colonists in the 17th and 18th centuries encountered this 'kê-tsiap' in Southeast Asia and brought the concept back to England. However, lacking the original ingredients, they began to replicate the savory sauce using local produce. Early European ketchups were often made from mushrooms, walnuts, oysters, or anchovies, sometimes with ingredients like lemons, celery, plums, or peaches. These early versions were typically dark and thin, used to enhance soups, sauces, and meat dishes, and were a far cry from today's sweet and tangy tomato condiment.

The Tomato's Grand Entrance

The pivotal shift towards tomato-based ketchup occurred in America. The first known published recipe for tomato ketchup appeared in 1812, authored by Philadelphia scientist and horticulturalist James Mease. Mease's recipe, which referred to tomatoes as 'love apples,' included tomato pulp, spices, and brandy, but notably lacked both vinegar and sugar, which are hallmarks of modern ketchup. The introduction of tomatoes was a game-changer, but challenges with preservation meant early tomato ketchups had a short shelf life.

The Rise of Modern Ketchup and Heinz's Legacy

As tomato ketchup gained popularity throughout the 19th century, particularly in America, the need for better preservation became evident. Manufacturers initially used potentially harmful preservatives like sodium benzoate and coal tar for color. However, the late 19th century saw Henry J. Heinz revolutionize the industry. In 1876, Heinz introduced his tomato ketchup, which achieved preservation naturally through a higher concentration of vinegar, sugar, and ripe tomatoes rich in pectin, eliminating the need for artificial additives. He also pioneered the use of clear glass bottles, allowing customers to see the quality of his product.