With the title for the best selling cookie in the world, more than 450 billion Oreo cookies have been sold since their debut. So it is a given that almost every nook and corner of this globe is well acquainted with the popular sandwich cookies. Also, given the number of flavours the brand releases in a particular year or season, it has successfully managed to make a spot for itself in every cookie lover’s life. But how much do we really know about this decades-old cookie? Take this quiz and find out!