Prepare Paper Towel

What happens here

Obtain a single sheet of paper towel. The presenter demonstrates folding the paper towel in half lengthwise, then rolling it tightly into a small, compact cylinder. The goal is to make it small enough to easily pass through the narrow neck of the bottle, but still retain enough bulk and surface area to provide an abrasive scrubbing action once inside.

Goal: Take a sheet of paper towel and roll it up tightly to create a compact, cylindrical shape that can fit through the bottle's opening.