Potassium counteracts salt as well as can help lower blood pressure. So if you want to combat a large salt intake eat some extra potassium and that should help your body expel the sodium. Also in a round about way it can also help lower blood pressure because sodium has been linked to increasing blood pressure.
Bananas have a lot of potassium and so do avocados….
I have found myself eating a banana after a large sushi meal.