Cog Jump is a shortcut done by jumping onto the cogs right after activating the first warp.
This allows the player to obtain Wings as early as possible, providing a faster way to reach the Temple of Time and Shrines. (Mostly used in versions 1.0.0 - 1.1.1)
Jump on the pillar and descend a bit.
Adjust the camera to view the platform.
Wait until the platform is nearly perpendicular to Link.
Simultaneously press Down on the control stick and X to perform a jump. If executed correctly, you should be able to land on the platform, jump onto the central part, and reach the roof near the exit door.
The visual indicator that confirms a successful cancel is witnessing Link draw a weapon while being in the menu after pressing B then Y.
Alternatively, you can time a precise jump attack onto the cog as demonstrated below.
Once you've performed Cog Jumps, follow the path shown below and climb the hill in order to get Early Wings