McDonald's Mulan Szechuan Sauce

I was 9 when Szechuan sauce graced sauce pumps across the nation, so naturally, I can't remember at all what it tastes like. But with the help of some actual Szechuan sauce (like, the stuff from Sichuan), a Redditor's diligent recreation, a fast-food-secret: mixing things together in different ways and repackaging it.