From Roman refuse to culinary gold: the ancient art of fermentation
It was once described by Roman writers as the liquid of putrefaction, made from fish guts and scraps. Today, this pungent, umami-rich condiment is a global pantry staple, driving massive industries and providing a scientifically proven way to reduce sodium without sacrificing flavor.
The history of fish sauce is a tale of two continents divided by a 'bean-fish' boundary. In Southeast Asia, traditions like Cambodia's *tik trei* and Thailand's *nam pla* have flourished for centuries. Conversely, Northeast Asian cuisines, such as those in China, Korea, and Japan, historically leaned toward fermented beans. While China saw a decline in fish sauce demand by 50–100 BC, the condiment later re-entered the region via traders from Vietnam and Cambodia during the 17th and 18th centuries.
The Roman predecessor, *garum* or *liquamen*, was famously maligned for its stench. Pliny the Elder even characterized it as the 'liquor from putrefaction,' noting it was produced from fish innards and scraps. In the Roman outposts of Spain, makers used mackerel to create a sun-fermented liquid that was widely traded. This lineage of fermented fish continues in modern iterations like Italy's *colatura di alici* and even the anchovy-based components of English Worcestershire sauce.
Modern science is now validating what chefs have long known: the glutamate content provides a powerful umami punch. A 2016 study by the Institute of Food Technologists found that substituting fish sauce for salt in dishes like chicken broth and coconut curry could reduce sodium chloride by 10 to 25 percent while maintaining flavor intensity. This makes it a functional tool for health-conscious cooking, provided one navigates the nuances of quality—such as nitrogen levels in Vietnamese varieties or the protein content in commercial brands.
Source: Fish sauce
