A liquid that softens and moistens food in the mouth?

Here's why:

* Softening: Saliva contains an enzyme called amylase, which breaks down starches into simpler sugars. This process begins the digestion of carbohydrates.

* Moistening: Saliva lubricates the food, making it easier to chew and swallow. It also helps to dissolve some food components, allowing you to taste them.

Let me know if you have any other questions!