Mackerel pickle is a tangy and spicy dish made with fresh mackerel fish marinated in a flavorful blend of spices and vinegar. This pickle is a popular delicacy in coastal regions and is known for its bold and zesty flavors. The mackerel fish is first cleaned and then marinated in a mixture of spices like red chili powder, turmeric, fenugreek, and mustard seeds. It is then cooked in vinegar and oil, which helps to preserve the fish and enhance its taste. This pickle can be enjoyed as a side dish with rice, roti, or bread.