Often it helps to add something fresh to the food such as lemon juice or something sweet, like apple wedges. 
The dish can also be stretched with a little water, milk, cream, cream cheese, sour cream, or créme Fraiche.
If the consistency of the dish does not allow you to work with a lot of liquid, you can alternatively add and boil one to two potatoes, peeled and cut into pieces, for 20 minutes with the dish. The potatoes absorb a large part of the salt. So that it does not even get salted to start with, during the cooking process, regular season, and never pour the salt directly into the pan, but add it with the fingertips
