I showed my wife the pictures last night, and her parents brew up the same tonics as you guys are making. They make bigger batches, since apparently my father in law drinks the stuff every day (that along with the Lao Khao and Red Bull drinks that he has with his friends. They would make Lao Khao drinks for me just to watch me cringe when drinking it... terrible stuff. Any health benefits they get from the tonics were likely destroyed immediately by drinking Lao Khao).
They would age out the tonics for 6 months and drink it while it's still kind of sweet. My wife liked to drink some of the tonics, but said a couple of them are pretty bad/bitter tasting.
Thanks for sharing the pics.