Mystery Cookie -- it's a dirty little secret in ice cream form.
Here's the scoop on #mysterycookie: It's six cookie varieties in ONE flavor. If you try Mystery Cookie at any future Scoopsies event(s) and guess all of the cookies correctly, you will be deemed "The Ultimate Cookie Monster" and win a gallon of Mystery Cookie and...a Golden Cookie. Your guesses must include brand and type of cookie and I can only tell you if your six guesses are correct as a whole. All are considered "cookies" on their packaging.
There are two of the same type of cookies in Mystery Cookie, though they are different brands.
You'll never guess unless you truly are a Cookie Monster. Happy guessing, you little piggies!