Description for the crafting ingredient "Broth Ingredients" reads:
'All the ingredients necessary to brew a simple fish stock - on of the pillars of Far Eastern cuisine. (Crystal not included.)'

'on' should be 'one'. And since the recipe calls for 2 Fire and 2 Water crystals, maybe change the last part to 'Crystals not included'.

Doman Udon Broth is a special recipe used for the level 65 CUL class quest.
Broth Ingedients is an Untradable item in the normal inventory supplied by the quest NPCs