51b9d570_ecrets_for_GameCube___GameFAQs__How_to_Unlock
[Unlockable] Grilled Hamburger [How to Unlock] 
To get Grilled Hamburger you must combine some type of fresh meat Charcoal and Fire Burst 1, dose the same as Beef Jerky only heals700 rather then 500
Baten Kaitos: Eternal Wings and the Lost Ocean Cheats, Codes, and Secrets for GameCube - GameFAQs