What is a fry pan that has piece missing out of the side used for?

A fry pan with a piece missing out of the side is typically used for deep-frying.

Here's why:

* Easier Oil Drainage: The missing piece allows excess oil to drain out easily after frying, making it easier to remove food and preventing it from becoming overly greasy.

* Better Visibility: The open side offers a clearer view of the food while frying, allowing you to monitor the cooking process more effectively.

* Improved Ventilation: The opening helps vent steam and hot oil, reducing splattering and making the frying process safer.

These types of fry pans are often called "chip pans" or "deep fryers". They are specifically designed for deep-frying foods like chips (French fries), chicken, and other battered or breaded items.