Sealed effectively and frozen. Haven’t attempted it nevertheless. Does have a powerful fish scent on the skin in the bag. It appears to be like yummy. Mackerel is fattier than tuna, so it packs many taste. However, it doesn't have a distinct smell like tuna and has a milder style. https://jaredyrdtx.webbuzzfeed.com/32356928/detailed-notes-on-buy-mackerel-fish-near-me-fresh