After weeks of examination and investigative help from super-sleuths around the nation, the case of the Mystery OREO is officially closed! Masking itself as the classic black and white cookie, the subject in question is none other than…

Churro!

Known for delighting street fair and carnival goers across the globe, Churro is becoming an increasingly popular flavor trend in the U.S., which made it the perfect, playful Mystery OREO flavor to surprise fans.

The hints of cinnamon flavor in Churro flavored creme were picked up by many supertasters. Other than Churro, popular flavor guesses included funnel cake, graham cracker, gingerbread and more.

The winner of the Mystery OREO sweepstakes has been notified directly and will receive a cash prize valued at $50,000.