The Romans' Favorite Condiment Was Rotten Fish Guts (And They Put It On EVERYTHING)

October 31, 2025
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Grossest Foods In History

Picture this: you're at a fancy Roman banquet. The wine is flowing, the roasted meats are sizzling, and the desserts are piled high. You reach for the condiment to spice up your meal, but it's not ketchup or mustard. It's Garum, a pungent, salty, and incredibly popular sauce made from... fermented fish guts. 🤢

Yes, you read that right. The absolute pinnacle of Roman cuisine, the condiment they put on literally everything, was a funky, fermented liquid made from the intestines and blood of fish. And they LOVED it. Let's dive into the gross, fascinating world of ancient Rome's favorite flavor enhancer.

What in Jupiter's Name IS Garum?

Garum was the undisputed king of condiments in the Roman Empire. Think of it as a combination of soy sauce, fish sauce, and Worcestershire sauce, but with a much more... rustic origin story. It provided a rich, savory, umami flavor that Romans craved, and it was used by everyone from emperors to legionaries.

"The taste of garum is thought to be comparable to that of today's Asian fish sauces, but with a much more... rustic origin story."

So, how did they make this magical, stinky sauce? The process was simple, but it wasn't for the faint of heart (or nose).

A Recipe for Rotten Fish Guts

The basic recipe for Garum went something like this:

1.Take a bunch of fish. Small, oily fish like anchovies, sardines, and mackerel were ideal.

2.Add their guts and blood. Don't throw anything away! The intestines were key to the fermentation process.

3.Mix with a LOT of salt. This prevented the mixture from just rotting into a pile of goo.

4.Leave it in the sun. The mixture was placed in large earthenware jars and left to ferment under the hot Mediterranean sun for weeks, or even months.

As the mixture fermented, the fish enzymes would break down the tissues, creating a protein-rich, flavorful liquid. The liquid that rose to the top was the prized Garum. The sludgy, fishy paste left at the bottom was called allec, and it was a cheap source of protein for the poorest citizens.

Because the process created such an overwhelming stench, Garum factories were legally required to be located outside of city walls. Can you even imagine the smell? 🤮

They Put It On... EVERYTHING?

When we say the Romans used Garum on everything, we are not exaggerating. It was the primary source of salt and savory flavor in their diet. Here are just a few of the things they doused in fermented fish sauce:

•Meat and Poultry: Lamb stews, roasted veal, and chicken were all flavored with Garum.

•Seafood: Of course! They even put fish sauce on their fish.

•Vegetables: Fried mallow leaves, anyone?

•Porridge: The poor would mix the leftover allec paste into their daily porridge.

•Desserts: This is where it gets truly wild. Romans would mix Garum with honey to create a sweet and savory glaze for dishes like pear-and-honey soufflé. 🤯

It was so essential that the Roman army was given a regular ration of it, sometimes diluted with water to create a drink called hydrogarum. It was the Gatorade of its day... if Gatorade was made of rotten fish.

A Fishy Fortune

Garum wasn't just a food item; it was a massive industry. The best Garum, from places like Cartagena and Gades in Spain, was incredibly expensive and shipped all over the empire in sealed clay jars called amphorae. The producer's name was stamped on the jar, like a designer label for fish sauce.

One of the most famous producers was a man named Aulus Umbricius Scaurus in Pompeii. His Garum was so renowned that mosaics advertising his brand have been found in the ruins of the city. The industry was a cornerstone of the Roman economy, creating a vast network of trade routes and making men like Scaurus incredibly wealthy.

So next time you reach for the ketchup, take a moment to appreciate that you're not about to pour fermented fish guts all over your fries. Or, if you're feeling adventurous, maybe you can find a modern fish sauce and try to recreate a Roman feast. Just... maybe open a window first. 😉

More Reading

Wikipedia: Garum

Bustle: 9 Bizarre Foods That People Actually Ate Throughout History

Serious Eats: The Rise and Fall of Jell-O Salad

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