The Fish Stew is under quest crafting in Atlantica. It's used for the Navigator's Dream quest(Atlantica Gold) at level 73 and for the Dinosaur Master quest at level 88. It needs 50 Radish, 20 Onion, 20 Garlic, 20 Leek, and 10 Carp. The Secret Vial for Memory Loss is under quest crafting (it is not the Secret Vial of Amnesia from the item mall). It requires 1 Secret Vial of Night, 100 Mandragora, and 1 Chardin's Perfume.

Secret Vial of Night is from the Exorcist Recruiting quest at level 57(Atlantica powerleveling). Like the Chardin's perfume above, you can get seven of them at once by canceling the quest as soon as you get the Secret Vial of Night, then speaking with Citratus again and accepting the quest again. Do this multiple time by time. To complete all the current title quests, you need a total of these seven vials. If you have already completed this quest, you can reset it by buying or making a Secrets of Time, Exorcist license and speaking with Hui Chao.