This marinated mackerel recipe is a delightful way to enjoy fish with a rich flavor profile. The mackerel is first cured in a mixture of salt and spices, allowing the flavors to permeate the flesh. Afterward, it is marinated in a tangy blend of vinegar and oil, combined with sliced onions that add a crisp texture and a mild sweetness. This dish can be served as a main course or an appetizer, making it versatile for any occasion. Paired with fresh bread or a crisp salad, this mackerel dish promises a satisfying meal that is easy to prepare and sure to impress your guests. The combination of the fish with the onions creates a lovely balance of flavors, while the marinating process enhances the overall taste significantly, making it a perfect choice for those who appreciate the subtle nuances of seafood.