Have you ever gone to add a dash of salt to a dish and accidentally added way to much? You can neutralize an over salted dish by adding a little sugar. This won’t fix the mistake if you dumped the entire shaker in you sauce, but when its just a little too salty, try adding a teaspoon of sugar. Make sure the sugar will be dissolved completely (in other words, its too late after the food it plated and ready to eat) and don’t add too much sugar, you don’t want it to taste sweet. Just enough to neutralize the mistake.