Edible Geography takes a look at the history of the pattern on Oreo cookies and, actually, all embossed biscuits. The Oreo started out in 1912 with a wreath design, added turtledoves in 1924, and settled on today’s four-leaf clover and serrated-edge pattern in 1952. Of course as with any good old-fashioned American icon, there are conspiracy theories about its connection to the Freemasons.