Remove freshly frozen mackerel from the refrigerator and defrost halfway to make it easier to cut. Cut off all unnecessary parts: fins, head, tail. Cut the carcass in half and completely remove all the insides along with the bones. The last step in preparation is to cut out the ridge and remove the black film to rid the carcass of excess bitterness.
Mix salt, paprika and garlic. Pour in the required amount of olive oil and stir. Let the filling sit a little and mix the ingredients thoroughly.
Take a pastry brush and brush the fish fillet thoroughly. Place each piece individually on cling film and wrap. Place in the refrigerator to marinate for several hours. The longer the mackerel is marinated, the tastier it will be.
After marinating, place the mackerel pieces on a baking sheet, previously covered with parchment paper and a little sunflower oil. Bake the fillet in the oven at 220°C for 15–20 minutes until completely browned.
Serve mackerel fillet with lemon wedges, with different types of herbs - cilantro, parsley, dill, and with a side dish of rice, couscous or potatoes.