Oreos have been around for more than a century, but the cookies like to keep things fresh by mixing up the flavors from time to time.
Next month Oreo will launch two new tastes: Cookie Dough and Marshmallow Crispy. In an effort to spread the word, it'll hold a giveaway during the Grammys, where the first folks who tweet a "top-secret hashtag" score free cookies.
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