Filets de maquereaux à l'escabèche

mackerel fillet 47.9% , water 23.7% , alcohol vinegar 15.3% , sunflower oil 7.6% , dehydrated onion 2.2% , tomato concentrate 1.8% , salt 0.8% , modified corn starch 0.5% , dried garlic 0.2% , parsley 0.3% , pepper 0.0% , Thickener 0.0% , natural flavouring 0.0%