The Herculaneum loaf is a stamped sourdough loaf of bread that was baked in the town of Herculaneum shortly before the Eruption of Mount Vesuvius in 79 AD. It has been partially preserved due to being carbonised in the eruption. It was discovered on the archaeological site in 1930.
The loaf was found in a house owned by Quintus Granius Verus and bears a stamp stating that it was made by one of his slaves. It is currently in the National Archaeological Museum, Naples.[1]