Ketchup

Lore & Background

Recipes for many types of ketchup began to appear in British and then American cookbooks in the 18th century. In the United Kingdom, from at least the early 18th century ketchup was prepared with mushrooms as a primary ingredient, rather than tomatoes. Tomato ketchup was sold locally by farmers. Jonas Yerkes is credited as the first American to sell it in a bottle. By the mid-1850s, anchovies no longer featured as an ingredient. American cooks also began to sweeten ketchup in the 19th century. Modern ketchup emerged in the early years of the 20th century, out of a debate over the use of sodium benzoate as a preservative. Harvey W. In response, entrepreneurs including Henry J. Heinz pursued an alternative recipe. Katherine Bitting, a bacteriologist working for the U.S. Prior to Heinz, commercial tomato ketchups were watery and thin, in part because they used unripe tomatoes, which were low in pectin.

Reader's Guide

Ketchup's significance lies in its evolution from a diverse range of early recipes—including mushroom, oyster, and walnut versions—to the standardized tomato-based condiment that became dominant in the 20th century. The shift was driven by food safety debates, particularly the ban on sodium benzoate, which led to increased sugar and vinegar content and a thicker, sweeter product. This change, championed by figures like Henry J. Heinz and supported by research from Katherine Bitting, established tomato ketchup as a staple in American cuisine and beyond. Its use extends beyond a simple table condiment for fried or greasy dishes; it is incorporated into sauces like Thousand Island dressing and Marie Rose sauce, and its flavor is replicated in snack foods such as potato chips. The term itself has a disputed etymology, with competing theories tracing it to Chinese (Hokkien), Malay, or Arabic origins, reflecting its global culinary journey. Today, ketchup remains a ubiquitous condiment, with variations in sweetness and thickness across different markets, such as the sweeter American version versus the more sour and runny Australian tomato sauce.

Did You Know?

• Early ketchup recipes included ingredients such as mushrooms, oysters, mussels, egg whites, grapes, or walnuts.
• Ketchup is a non-Newtonian, shear thinning fluid, meaning its viscosity decreases under stress.
• The USDA grades some ketchup as 'Fancy' based on its higher tomato solid concentration.

A Word with Many Origins

The name ketchup carries a linguistic mystery that scholars have debated for centuries. A separate Malay theory links the term to kicap, originally a word for soy sauce that itself borrowed from Chinese, and which in Indonesian cuisine encompasses salty soy sauce, sweet soy sauce, and even fish sauce. A third line, championed by anthropologist E. N. Anderson, connects ketchup to the French escavèche and the Spanish and Portuguese escabeche, both meaning a pickling sauce, which culinary historian Karen Hess traced back to the Arabic kabees. In everyday usage, ketchup dominates in North America and the UK, while catsup persists in parts of the southern United States and Mexico, and the British also call a similar product simply 'tomato sauce.'

From Mushroom Brine to Tomato Classic

Long before tomatoes dominated the condiment landscape, ketchup was a far stranger affair. In seventeenth-century Britain, the sauce was built around mushrooms as its primary ingredient, and early recipes across the Atlantic also featured oysters, mussels, egg whites, grapes, and walnuts. Throughout the nineteenth century, American cooks gradually sweetened the sauce, and tomato ketchup grew in popularity even before fresh tomatoes themselves became common, partly because people felt more comfortable eating tomatoes locked inside a cooked, vinegar-laced, spiced product.

Sugar, Law, and the Modern Bottle

The sweet-and-sour profile that defines ketchup today was not inevitable; it emerged from industrial pressures and a landmark regulatory fight. As ketchup production scaled up, manufacturers needed reliable preservation methods, and the answer was a dramatic increase in sugar content. In Australia, sugar was not added to tomato sauce until the late nineteenth century, initially in modest amounts, though modern Australian formulations now match American ketchup in sugar levels while differing in the proportions of tomatoes, salt, and vinegar. American ketchup tends to be sweeter and thicker, whereas its Australian counterpart is more sour and runny. The defining regulatory moment came in the early twentieth century, when Harvey W. Wiley, widely regarded as the father of the U.S. Food and Drug Administration, challenged the safety of sodium benzoate, a preservative common in condiments. In response, entrepreneurs including Henry J. Heinz developed alternative recipes that eliminated the need for benzoate altogether, with bacteriologist Katherine Bitting part of the scientific landscape informing these reformulations. This regulatory pressure, combined with the sugar-driven preservation strategy, locked in the formula consumers recognize today.

Beyond the Drip: Ketchup in the Kitchen and Beyond

Although most people picture ketchup as a squeeze-bottle companion to fries, its culinary reach extends well beyond that single role. The condiment is a standard accompaniment for hot, fried, or greasy dishes, and it serves as a base or ingredient in compound sauces such as Thousand Island dressing and Marie Rose sauce. Cooks also use it as a general seasoning element in recipes, and its flavor profile has been replicated as an additive for snack foods, most notably potato chips. The typical tomato ketchup formula builds on tomatoes, sugar, and vinegar, layered with a blend of seasonings and spices that commonly includes onions, allspice, coriander, cloves, cumin, garlic, and mustard, with some varieties adding celery, cinnamon, or ginger. This versatility—spanning condiment, sauce component, cooking ingredient, and flavoring agent—helps explain why ketchup, in its many historical and regional forms, has remained a near-universal presence on dining tables from the Thirteen Colonies to modern supermarkets.