Oreo has finally revealed its 2019 mystery flavor.

Using the hashtag #MysteryOREO, Oreo announced the flavor on Instagram: "Case closed! The #MysteryOREO is Churro flavored creme." Oreo also published the same announcement on Twitter.

Oreo ran a sweepstakes contest from September 16 to November 10, offering a grand-prize of $50,000 to a random participant who entered the contest with an accurate guess of the mystery churro flavor. Oreo said, "Nice work, super sleuths. We have notified the winner directly. More details at MysteryOREO.com."

Participation in similar challenges of tasting and guessing isn't new to Oreo fans. Previously, Oreo has had very similar fun with its hungry fans, releasing a mystery fruity pebbles flavor in 2017.

Oreo's new flavors of this year don't end with churro flavored creme, though. Additional new flavors currently available from Oreo include caramel coconut and chocolate marshmallow, according to MSN. And even more flavors were introduced earlier this year, according to USA Today, including mint chocolate chip and maple creme.

Oreo, still marketed under the Nabisco name, is a major product of Mondelez International, Inc. (MDLZ  ). Mondelez owns the manufacturer Nabisco.

While it has been a subsidiary of Mondelez since 2012, Nabisco was the first producer of the Oreo cookie. Perhaps surprisingly, the first Oreo was developed and trademarked a hundred years earlier, in 1912. Since then, over 450 billion Oreos have been sold worldwide, according to an article published by Time at the centennial.

Mondelez owns many top food brands that all emphasize a popular food-oriented past time: snacking ("Snacking Made Right"). Some of Mondelez's other major snack brands include Cadbury, NutterButter, Ritz, Trident, Sour Patch Kids, Triscuit, Philadelphia, and Wheat Thins, some of which are even billion-dollar brands.

The predecessor of Mondelez is Kraft Foods Inc., which split in 2012. Now, in addition to Mondelez brands, Kraft Heinz Company (KHC  ) maintains its leadership in the food world.