A small grocery store in Corniglia conveniently located right where the bus (from Corniglia train station) drops you off. They have a few GF “senza glutine” snack options like cookies, crackers, and a pre-packaged focaccia bread. There were 2 lactose-free and 1 GF/DF options. They were somewhat hard to find - they’re located across from the register. They also sell fresh fruit. It’s a great option to stop at if you’re hiking through the villages!