Feast or Fiction?
The quest is unlocked after completing the All Hyrule, United scenario.
"Zora's Domain is abuzz with rumors of a seafood dish that can improve morale. Many doubt that the fabled food really exists. As for Sidon, he wants to obtain the ingredients and see for himself..."
"The nutritionist taught Sidon how to make the dish, and the prince showed off his culinary talents to the whole domain! As he had hoped, his rendition of the meal really did improve morale."