The true bluefin sauté is a dish from the live action One Piece adaptation. Being a work of fiction some ingredients were made up, like the elephant tuna, which I can assume would be equivalent to just a high quality piece of tuna. The rest of the description is quite vague, sweet soy reduction, seared asparagus, and a red tulie. Now you do see sautéed onions and a brief glimpse of what could be basil used to make a green oil. However I decided to take creative liberties and remove the basil (if it was basil) and replace it with parsley and chives in the green oil.