Least acid forming: Gelatin, honey (processed honey, not clover honey), syrup, tea, distilled vinegar, rice vinegar Moderately acid forming: Coffee, vanilla, balsamic vinegar Very acid forming: Alcohol, artificial sweeteners, cocoa, condiments (the worst include ketchup, mayonnaise, and pickle relish), hops, soft drinks, sugar (brown, white, and confectioners), yeast

