Tinned fish like sardines, mackerel, cod and more are making a comeback thanks to social media. CBS Saturday Morning heads to Porto, Portugal, to discover how the utilitarian fare became a culinary sensation.

Tinned fish like sardines, mackerel, cod and more are making a comeback thanks to social media. CBS Saturday Morning heads to Porto, Portugal, to discover how the utilitarian fare became a culinary sensation.
NEWYou can now listen to Fox News articles! Talk-show host Piers Morgan appeared to backtrack …