Mix salt and sugar in a ratio of 2 to 1 (2 parts salt and 1 part sugar).
Cut the zest from the orange and cut it into small pieces.
Mash the orange zest with salt and sugar, add a little water to make a porridge-like mixture.
Spread our orange mixture under the fish and on the fish itself.
I covered the fish wrapped in parchment. Then I put it away in the cold.
Salt the fish for 12 hours (to make the fish more salty, increase the time). Then we clean the fish from the mixture, cut it into slices and put it on a plate.
Bon appetit to everyone!