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The Season 3 finale might be hours away, but an even bigger day is still ahead for Rick & Mortyfans.

On Oct. 7, for one day only, McDonald's will let all comers sample a bit of that sweet, sweet Szechuan sauce. The Holy Grail of Mickey D's condiments was a punchline way back in April, when Rick & Morty's Season 3 premiere streamed for just 48 hours, starting on April Fool's Day.

SEE ALSO:This is the fanciest McDonald's burger box we've ever seen

A few months later when Season 3 kicked off in earnest, McDonald's held a contest that concluded with three lucky fans getting their own bottles of Szechuan sauce. One in particular made headlines when he sold his loot to Deadmau5 -- interrupting the DJ's wedding weekend in the process.

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The IRL history of McDonald's Szechuan sauce dates back to the late '90s, when Disney's Mulanreleased. The fast food franchise offered a tie-in deal that packed Szechuan dipping sauce in with Chicken McNugget Happy Meals.

Only select McDonald's locations will have the Szechuan sauce on Oct. 7. You can look to see if there's one near you on this website, and if you're -- I'm sorry for the bad pun, blame McDonald's -- obsaucedenough to chase it.

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