3.Put the trout and onion in the bowl. Add mayonnaise. You can pepper it. It is not necessary to salt, since the fish and mayonnaise are already salty. Mix everything, spread the egg halves on top. You can, of course, mix the eggs immediately with mayonnaise, but I like to add them last, so that the yolks do not choke and a beautiful bright composition turns out on the plate. Do not be confused by the fact that the salad is prepared so simply. The main thing is the result and it is great. The ingredients are perfectly combined with each other. It seems that they were specially created in order to prepare this salad from them.