Someone on eBay placed a bid worth $14,700 for a pair of 19-year-old McDonald’s McNugget sauces that the seller recently found in “an old car.” One of these condiments, the “Szechuan teriyaki dipping sauce,” was released as a tie-in for the Disney movie Mulan, but it hasn’t been available since the film came out in 1998. People shell out big bucks for nostalgic food products on eBay all the time, but this is an unusually high price tag. Its popularity can only be explained by a viral stunt that the creators of Adult Swim animated comedy Rick and Morty launched a few weeks back.

Please God, I don't ask for much, please let us gain enough cultural influence to force McDonald's into bringing back that fucking sauce. — Rick (((and Morty))) (@RickandMorty) April 2, 2017

To coincide with the debut of their April Fools’ Day episode, which had a plot line about the Mulan sauce, the Rick and Morty team started a Change.org campaign asking McDonald’s to bring back the dip. As of press time, this campaign has received over 20,000 signatures. The team even had some success engaging with McDonald’s on social media:

Rick and Morty fans also flooded the comments of the YouTube video of the commercial for the sauce with references to the show:

Although McDonald’s has not announced any official plans to bring the sauce back, a spokesperson recently remarked: “We never say never, because when our customers speak, we listen.”

Until the chain’s head honchos decide to put the sauce back into commission, fans can continue to troll eBay, hoping and praying that someone else in the world discovers a lost packet of “Szechuan dip.” Currently, one eBay seller is offering another packet of the sauce for the comparatively low buy-it-now price of $1,000:

• Man makes more than £11,500 after selling rare vintage Asian-style dipping sauces from McDonald's [Mirror]

• Get Mcdonalds to bring back the Szechuan Mcnugget Dipping Sauce for the new Mulan movie [Chang.org]

• The Secret World of Selling ‘Nostalgic’ Food [Eater]