Ketchup was one of the first successful processed foods. By 1900 there were over 100 different brands of this popular condiment. Made from fermented tomato cores and skins, canners added vinegar to flavor and preserve it and dyes to make it red. Because the resulting concoction was prone to explode, canners started adding benzoate of soda as a preservative. Henry Heinz proved ketchup could be made without benzoate in a clean factory using ripe tomatoes.
United States Lines - Comfort, Courtesy, Safety, Speed
The Emergence of Modern America (1890-1930)
