12 Foods and Beverages That Will Stain Your Teeth

Soy sauce. It’s a classic addition to any good stir-fry, but the dark colouring of soy may linger on your teeth long after your meal’s finished.It goes great with sushi, sure, but it's not so top for your teeth. The dentist goes so far as to call soy sauce "one of the worst offenders for staining teeth, because the dark colouring of soy can linger long after your meal is over."