Garum is a traditional Roman fermented fish sauce or condiment. It was used often in now-ancient Roman cuisine, as a condiment or sauce on its own, an additive to sauces, or as a seasoning.
1 sextarius (2 ⅓ cup/546 mL) anchovies or other fatty fish
3 sextarii (7 cups/1.638 L) wine
Add anchovies and wine to a pot.
Boil the mixture until thick.
Strain the fluid through a sieve, and bottle for future use.