Mackerel Ceviche with Pickled Cucumber is a refreshing and tangy dish that combines the delicate flavors of fresh mackerel with the crispness of pickled cucumber. The mackerel is marinated in a zesty citrus dressing, which helps to tenderize the fish and infuse it with bright flavors. The pickled cucumber adds a refreshing crunch and a hint of acidity, balancing out the richness of the mackerel. This ceviche is perfect as an appetizer or a light lunch, and it's a great way to showcase the flavors of fresh seafood.