Oreo is out with a new cookie flavor, but Nabisco hasn’t revealed what it is.

Instead, the company is offering Oreo lovers the chance to guess the new mystery flavor for a chance at winning $50,000 or one of five $10,000 prizes, according to USA Today.

Fruit Loops, Fruity Pebbles and Trix-flavored are a couple of the guesses swirling around on social media.

Cookie lovers have until Nov. 30 to enter their oreo flavor guesses.