This document lists 7 foods and drinks that can stain and ruin healthy white teeth, such as black coffee, tea, red wine, chocolate, blueberries, cola, and fruit punch. It explains how the acids, dyes and compounds in these items can easily stain the porous outer layer of teeth. The document encourages maintaining white teeth through being conscious of your diet and recommends contacting West Ryde Dental clinic for teeth whitening treatments starting at $600.