What food do you love? What food do you hate? If you ask around, you'll soon see there's no right or wrong answer – it's all a question of taste. But our taste, it turns out, isn't simply a ...

Usually, a sour taste in your mouth means you burped up something you recently ate. But a sour or acid-like taste in the mouth can also occur for other reasons, such as smoking, poor dental hygiene, ...