Fish Sauce Used to Date Pompeii Eruption

Rossella Lorenzi, Discovery News
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Get Your Garum Here!
Get Your Garum Here! | Video: Discovery Archaeology
 

Then he would have covered the fish entrails under a layer of salt about two fingers high. The layer sequence -- herbs, fish and salt -- was repeated until the container was filled. The concoction was then left in the sun to macerate for a week or so, and the sauce was mixed daily for about 20 days.

The process produced a smelly liquid -- a local delicacy to the Romans.

"Pompeii's last batch of garum was made with bougues, a fish that was cheap and easy to find on the market in those summer months. Still today, people living in this region make a modern version of garum, called "colatura di alici" or anchovy juice, in July when this fish abounds on the markets," Ciarallo said.

The eruption froze the sauce right at the moment when the fish was left to macerate. No batches of finished garum were found, since the liquid evaporated in the heat from the eruption.

"Since bogues abounded in July and early August and ancient Roman recipes recommend leaving the fish to macerate for no longer than a month, we can say that the eruption occurred in late August-early September, a date which is totally compatible with Pliny's account," Ciarallo said.

Doubts about the date of the eruption emerged a couple of yeas ago when archaeologists discovered a coin which seemed to refer to the 15th imperiatorial acclamation of Titus, believed to have occurred on Sept. 7, 79 A.D.

"Unfortunately, that coin can't be taken as a dating evidence, since it is hardly readable. I myself agree with Ciarallo's dating of the eruption, even though I think that a bit of mystery remains. However, it is not so important whether the eruption occurred in August or in October," Teresa Giove, a coin expert at Naples' Archaeological Museum, told Discovery News.

According to Ciarallo, the date of the eruption on August 24th is also confirmed by biological data.

"All pollen found in Pompeii belong some 350 summer species. I think this is more strong evidence in favor of Pliny's account," Ciarallo said.


Related Links:

What Would Happen if Mount Vesuvius Erupted Today?

Discovery News blog: Archaeorama

All About Garum

Discovery News blog: Archaeorama


 
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