If you want to make your own version. There are a couple tricks. Take an entire head of garlic, place it on a solid surface and crush it with the heal of your palm. Then throw the entire mess into a mason jar, or even two matching bowls closed up. Then shake the piss out of it for 10-30 seconds.

Then dump the contents and pick out the fully pealed garlic.

Then just finely chop or crush the garlic and put it into an ice cube tray. You can then add a thin layer of olive oil to help cut the freezer burn, or just cover the tray.

A food processor and a spoon can also be used to keep from touching the garlic juice.