There were a lot of these snack bars, or fast food bars as they have been nicknamed, scattered around Herculaneum but the all looked pretty much the same. It has been speculated that it might have been a chain owned by one man---who knows. Each one had a counter made of marble fragments of different colors which gave the counter an appealing look. There were large holes in the counter where large amphorae could be inserted. When excavated, these amphorae still had food in them. There were cheeses, walnuts, almonds, dates, figs, raisins, cakes and pastries. For liquid there were wines, some sweetened with honey, others were mulled or spiced. One odd note, the walnuts are "English" walnuts. Apparently "English" walnuts were "Italian" walnuts first. They were probably brought to England by the Roman armies and flourished in the new climate.
One of the snack bars had a figure with an exaggerated phallus, a large jug, and a woman holding a purse and a bell painted on the wall behind the counter. All of these are symbols of protection from the Evil Eye. The owner of this shop was either paranoid or having trouble with sneak thieves because he also had a small peep hole to keep on eye on the transactions in his shop.
The homes, presumably of the shop owners, were either behind or next to each shop. You can tell how well the shop did by the size and grandeur of the homes. If there was a marble floor, or the like, the owner was doing well.
Even though Herculaneum was a wealthy seaside resort, there was a middle class and the snack bar owners belong to that class. There were also slaves in abundance. One amazing find was in slave quarters of a wealthy home (The House of the Bicentenary). At that site there is a cross, some 10" high, scratched into a plaster panel. This would be one of the earliest examples of the use of a cross in Christian worship. I mention this in connection with the snack bars because it is from the middle class shop owners and slaves that Christianity got it's start and apparently there was a cell in Herculaneum at the time of the eruption.