Lay fish flat down in a bowl as evenly as possible.
Into a second bowl add lemon juice, white wine vinegar, salt and sugar.
Slice onion into rings – not too thick.
Add onion to marinade and leave for a few minutes.
Sprinkle fish with cayenne pepper then lay onions over fish.
Slice tomatoes.
Dip them in marinade and place them on top, pour liquid over fish then cover.
Refrigerate for 24 hours.
To serve, place two fillets with some onion and tomato on a plate, and finish with chopped parsley, oil, salt and pepper. Great served with some crusty bread.
Very Very Nice now thatz my sort of stuff nice lite and refreshing great for summertime Great Job Chef thanx alot keep up the good work