What utensil is best used for removing the skin of an apple?

A peeler is the best utensil for removing the skin of an apple because it is specifically designed to efficiently and safely remove thin layers of skin from fruits and vegetables. Peelers are ergonomically shaped, making them easy to handle and control, which minimizes the risk of cutting into the flesh of the fruit, thus preserving the edible part.

Using a peeler allows for quick work without the need for excessive force, which can be required when using a knife. Unlike a grater, which is not suited for this task as it is primarily used for shredding, and a mandoline, which is used for slicing, the peeler is the most suitable tool for the precise task of peeling. This specialization makes a peeler the ideal choice for achieving the desired skin removal without damaging the fruit.