• Regular soy sauce. A tablespoon of soy sauce contains over 850 mg of sodium. That’s over 30% of your daily limit. Just imagine how much salt you consume with your sushi if you eat it with soy sauce! Set aside the liquid salt that most brands of soy sauce are. From now on eat sushi without this extra or, if you need some time to get used to your new habit, request the low-sodium soy sauce.