But only for 1 day. Don’t announce it ahead of time.
Instead, people just show up, and see banners saying “Back in stock, Szechuan Sauce!!!”
But you only see that banner if you go inside. No promotion. No social media. No mention of any kind besides a single banner at the ordering counter.
Then tweet about it the NEXT day. After it’s gone.

It wasn’t even good which was literally one of the stated reasons why they joked about it on Rick and Morty.