So I am going to list the ones I have managed to find, if you know the locations or any that I miss pls list them. :)
It would seem you must complete the storyline for the zone for the quest to show up ( I might be wrong on this point )
Unga Ingoo = quest found at Marista in Krasarang Wilds. ( coords, 52.4, 76.1 )
Quest name - Funky Monkey Brew.
The Brewmoon Festival = quest found just out side the Ancient Passage in The Vailed Stair. ( coords, 52.2, 44.1 ) Quest name - The Hun-Lai Kicker.
Greenstone Village = quest found in greenstone village in the Jade Forest. ( coords, 38.1, 35.1 ) Quest name - Volatile Greenstone Brew