Slippery liquid that makes food easy to swallow and helps break the down?

The slippery liquid you're describing is saliva.

Here's why:

* Slippery: Saliva contains a lubricating component that helps food slide easily down your esophagus.

* Easy to swallow: This lubrication makes swallowing easier and prevents food from sticking to the throat.

* Breaks down food: Saliva contains an enzyme called amylase, which starts the process of breaking down carbohydrates (starches) in your mouth.

So, saliva plays a crucial role in making food easy to swallow and in the initial stages of digestion.