Fried Cod with spicy caramelized onions

Serve 6

In a bowl, prepare the batter combining the flour with sparkling water and a pinch of salt. In the meantime, clean the cod, removing the skin, then cut it into 2 cm thick pieces. Bring the corn oil to temperature, dip the pieces of cod in the batter, then fry them in it. When the fish is golden brown, drain it and dry it on paper.  Mix the Caramelized onion with the fresh chilli pepper chopped into small pieces, the fresh mint leaves and a little wine vinegar. Place the fried cod on the plates and serve it with the prepared spicy caramelized onion sauce.