These are instructions on how to perform an untethered jailbreak of your iPod touch on iOS 5.1.1 using Absinthe for Mac.
Warning***: Before you continue make sure to do a backup of your device in iTunes as you may lose your Camera Roll during this process.
Step One
Download the latest version of Absinthe from here.
Step Two
Double click to mount the downloaded dmg and drag the Absinthe application to your desktop.
Double click to launch the Absinthe application from your desktop.
Step Three
As prompted, connect your iPod touch to the computer via USB. Make sure to remove any passcodes or VPN settings you've previously set.
Step Four
Click the Jailbreak button to begin
Step Five
The application will take you through several steps to jailbreak including: beginning jailbreak, sending initial jailbreak data, sending final jailbreak data, waiting for reboot, and waiting for process to complete.
Step Six
You will be informed that the jailbreak is 'Done'. 
Step Seven
In a few moments you will notice Cydia appear on your Springboard!
***If you have any problems please retry the procedure on a device cleanly restored to iOS 5.1.1 (Remember to backup before restoring)***
