To make up for sounding less than cordial in the warrior thread, I looked up the Wooden Pot on Allakazham. This is the most info they had. This post is by a fellow named "Binak" - a Scholar. From reading that post, it seems you might also want to look into the "Sky Pot".
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First off, you need to complete the "Inside the Belly" quest in Selbina. The type of fish you need to turn into him is called a Bhelfel Marlin. There fished up off the Ferry between Selbina and Mhaura. When you turn them in you have a chance of either a Pirate's Chart(Valkurm Dunes)or a Brigard's Chart(Buburimu Peninsula).
Once you have the Brigard's Chart in hand, head to Buburimu Peninsula(Khoonta Dunes). Make sure you bring a friend high enough to kill some fish around lvl 20. Have your friend in party with you. Trade the chart the the ??? and an old man will appear and want you to get his penquin ring for him(you can see it shining in the water). You'll get lvl capped at 20, but your friend in party wont(he gets to stay his/her lvl and still kill mobs you pull up). Now start fishing like crazy, only stop to turn around to open your Treasure chest that you pull up. You dont want to wait till its over to open the chest, they will vanish when its all over.
I usually am able to fish about 4 times before the session is over. Drops I usually get is the Wooden Flowerpot, Sky Pot, Blue Pitcher.
Other items that have obtained:
500gil
Rusty Subligar
Penquin Ring^^
Monsters><
Gold Beastcoins(I never get any, but ppl say they have)
Oh and the stats on this flowerpot:
Light Energy +1
Storage +1
Mogenhancment Fishing(Items)