NOTE: Guess the flavor of the 2019 OREO Mystery cookie. If you provide a correct answer, you will receive 1 sweepstakes entry. Either purchase a package of the OREO Mystery product and taste the cookie or view Sponsor’s Sweepstakes advertisement(s) that contain a clue as to the flavor of the cookie. The Oreo Mystery Flavor 2019 Sweepstakes will award one Grand Prize Winner $50,000 cash in the form of a check. MAIL-IN ENTRY: To receive your sweepstakes entry without making a purchase or providing a correct guess, hand print, on a 3" x 5" piece of paper, your name, street address, city, state, zip, daytime phone number, email address, date-of-birth, and a guess as to the flavor of the 2019 Mystery OREO cookie and mail it in a #10 stamped envelope with proper postage affixed to: OREO Mystery Flavor 2019 – Entry, P.O. Box 5224, Department: 840041, Kalamazoo MI 49003-5224. Mail-in entries must be postmarked by November 11, 2019 and received by November 18, 2019. You will receive 1 into the sweepstakes whether your guess is correct or not for each properly submitted and received mail-in entry.