PHILADELPHIA (CBS) — Oreo fans, you could be in line for a big prize.

All you have to do to get in the running is figure out Oreo’s new Mystery Flavor.

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Anyone who can figure out the limited edition flavor could be eligible for a chance to win $50,000.

You have until Nov. 30 to guess the mystery flavor.

Smaller prizes are up for grabs, too. Go to OreoMystery.com for more details.