How to make
Clean the mackerel and put them in the marinade, which is made as follows.
Finely chop the onion and sprinkle it on the fish, which you've coated with plenty of olive oil and lemon beforehand.
Sprinkle with a little salt and pepper and leave for about 1 hour, then pour on white wine and leave for about 2 hours or more.
Drain and cook the fish on a grill on or charcoal pit.
