Tuna potato: where to get it

Source	Quantity	Chance per roll
Balfrug Kreeyath []	2	8/128
Corporeal Beast []	30	21/512
Medium Forgotten Belongings [{'content': 'This drop is replaced by oddments for Ironman Mode players.', 'name': 'ironman'}]	2	1,309/15,717, 3 rolls
Nodon artificer []	2	10/128
Nodon enforcer []	2	1/32, 3 rolls
Nodon enforcer []	2	1/38.4, 3 rolls
Nodon engineer []	2	1/32
Nodon engineer []	2	1/38.4
Nodon guard []	2	12/128
Nodon hunter []	2	10/128
Siege engine []	2	10/128
Tstanon Karlak []	2	8/128
Zakl'n Gritch []	2	8/128