Food·Posted on Oct 2, 2017McDonald's Is Bringing Back Its 1998 Szechuan Sauce...For One Day Only"I WANT THAT MULAN MCNUGGET SAUCE, MORTY!"by Andy GolderBuzzFeed Staff LinkFacebookPinterestTwitterMail If you're a fan of Rick and Morty, then you probably know why people have been obsessed with McDonald's Szechuan Sauce lately. Shortly after the episode aired, McDonald's sent Justin Roiland — the show's co-creator — his very own bottle of the delicious sauce. Justin Roiland @JustinRoiland Holy shit. 04:52 AM - 30 Jul 2017 Reply Retweet Favorite The rest of us, sadly, were left out in the cold, sauce-wise. Well, GUESS WHAT: McDonald's is bringing back its legendary Szechuan Sauce for one day only, and it's coming up THIS WEEK! To help promote its buttermilk crispy tenders, McD's is offering Szechuan Sauce in a select few of its restaurants on Oct. 7. Me right now: Tap to play GIF Tap to play GIF