Why to blow on the hot potatoes?

Here's why:

* Heat Transfer: Blowing on the potatoes creates a current of air. This air is cooler than the potatoes, so the heat from the potatoes transfers to the air, cooling them down.

* Surface Area: Blowing creates a more turbulent flow of air, which increases the surface area of the potato exposed to the cooler air. This speeds up the heat transfer process.

* Evaporation: The air you blow contains moisture. As this moisture evaporates from the surface of the potato, it absorbs some of the heat, contributing to the cooling process.

So, the next time you're impatient to eat those hot potatoes, don't hesitate to give them a good blow! It'll make them more enjoyable to eat.