
Garum held a place in ancient cuisine comparable to that of salt or oil, present on nearly every table, from the most modest to the most lavish. Its use dates back to the Greek cities of the Black Sea and Ionia, which were already producing fermented fish sauces before Rome turned it into an industry of imperial scale. Major production centers, such as Pompeii, Carthage, or Gades on the Atlantic coast of present-day Spain, exported their products in amphorae marked with their origin, evidence of a genuine economy built around this condiment. Several grades existed depending on the quality of the fish and fermentation time, with the finest garum reserved for wealthy tables while coarser versions, such as allec, fed the common people. Its production, lengthy and pungent, took place away from dwellings in open-air workshops called cetariae, where the heat of the Mediterranean sun played an essential role in fermentation.
Garum appears as an amber to brown liquid, intensely salty with a powerful, long-fermented aroma, reminiscent of certain fish sauces still used today in Southeast Asia. Its deep umami taste, both marine and slightly iodic, served to enhance and bind preparations rather than to be consumed alone. The odor, very pronounced during production, mellowed after filtration and aging in amphorae.
Garum accompanied Roman meals daily, serving as both a basic condiment and seasoning for sauces, vegetables, meats, and fish. It appeared on popular tables in a more rustic form as well as at refined banquets where the finest and most expensive grades were used.
Born in Greek cities before being adopted and perfected by the Romans, garum had regional variations depending on available fish and local techniques, particularly between Italy, Spain, and ancient North Africa. More economical versions, such as allec made from production residues, differed from the most sought-after garum, reserved for the most refined culinary uses.