Clean salmon to remove any of the gray flesh and cut into three pieces

Mix salt and sugar

Take half the salt and sugar mixture and add to a bowl with the salmon pieces. Cover well

After 12 hours drain the water and add the rest of the salt and sugar mixture

After another 12 hours wash and pat salmon and cut into small slices

Cut onion into thin slices and add to a clean bowl

Add sunflower oil, black pepper, 1 teaspoon salt and 1 teaspoon sugar

Mix well

Refrigerate for 12 hours

Serve on crackers with a slice of onion and capers