"Conjured meat of the mysterious creature called the catoblepas."
This is a quest item for "A Posh Reception".
Geralt must talk to Thaler and Velerad to figure out Princess Adda's favorite dish (to get Romance Card).
Thaler tells him her favorite dish is Catoblepas meat, but only after running a small errand for him.
Velerad tells him she prefers to eat Catoblepas meat rare.
Geralt asks Triss to conjure a portion of catoblepas meat, rare, which he then presents to the Princess.