To make some fantastic sandwiches, the best solution is to go to the best supermarket of the center (it is open from 8:30 a.m. to 9:30 p.m.).
You can go, first, to the bread counter, and, once you’ve bought the bread, you can go to the salami and cheese counter (they also have excellent fresh mozzarella of Battipaglia and Paestum). At this point: you can ask the person who works at the salami and cheese counter to cut the bread and put inside the ingredients you choose to buy.
It is in a side street of the main street of the city, and the name of the supermarket is “Sole – 365“.
Here there are the google maps coordinates to reach it easily: