If you want to buy local products in Catania, we recommend you take a walk in the long and beautiful Via Etnea, where you will find many typical shops, or in the streets that branch off from it.
Since Catania is a tourist place, it is also easy to find typical food products in any supermarket.
Remember that, in each port, you have a Guest Information Center where you can ask the staff for any advice related to which brands offers a better product.