Do you live outside the USA? Please tell us where you buy your apple cider vinegar! We frequently get questions from around the world.
USA
Organic Apple Cider Vinegar:
Popular Brand: Bragg
Stores that carry organic: Whole Foods (carries at least 6 different brands), Trader Joe's (carries only their own brand), all health food stores.
Commercial ACV:
Big grocery store chains carry their own brands plus about 3 others.
Popular Brand: Heinz (be careful, Heinz changed formulas on one of their vinegars and it is now apple cider vinegar "flavored").