Mackerel with rhubarb is a unique and flavorful dish that combines the richness of mackerel with the tartness of rhubarb. The mackerel is pan-seared to perfection, creating a crispy skin and tender flesh. The rhubarb adds a refreshing and tangy element to the dish, balancing out the richness of the fish. This recipe is perfect for those looking to try something different and exciting with their mackerel.