Heartburn is a consequence of stomach acid splashing back into the lower part of the esophagus, where it causes damage and pain. Many people have shared their unusual home remedies for heartburn, from grated apple or a handful of almonds after a meal to the old classic, a bit of baking soda in a full glass of water.
Baking soda is basic, so it counteracts the acidity that is causing trouble. Saliva, too, is basic, by the way, so chewing gum or sucking on hard candy to stimulate saliva often works surprisingly well against heartburn. Make it sugarless to protect the teeth.
Vinegar, on the other hand, is acidic, so it is a bit of a surprise that many people find a sip of vinegar either straight or mixed into water is helpful against heartburn discomfort. In this sound clip, a radio show listener reports his experience using apple cider vinegar to alleviate symptoms of heartburn.