garlic snacks

Marinated Garlic Cloves

Hello Maki,
A while back I was at a party for my friends birthday.
She had at her party garlic cloves which I think had
been left to soak in soy sauce or something similar
for a long while. She said that they were sort of a
Japanese snack. With that being said, have you ever
heard of this and if so, is it really just as simple as
leaving cloves of garlic to soak in soy sauce?

Thanks for your time ^_^