Want to know a secret? Mackerel is a total steal. Top-notch mackerel is not only delicious and nutricious, it's weirdly affordable. For example - this offereing from Da Morgada: firm, rich-tasting filleted mackerel, seasoned lightly with salt and packed in olive oil. Make a fabulous "shabby-chic" sandwich with mayo or ali-oli, Da Morgada mackerel (either smoked or plain), a handful of greens and slice of tomato, all in a crusty baguette. Holy mackerel that's delicious!