Authentic Asian Sweet & Sour Sauce - Recipe Although its a well known fact that the Sweet &amp; Sour sauce we have come to expect is not really an authentic sauce served in Asia, its one that we have come to love in North America. The problem is sourcing that perfect recipe. 
Although I live in the Asian capital of British Columbia and have an extended network of colleagues in the food industry, I am still stumped and cant find the recipe for this sauce. There are plenty of hacks available online, but still nothing that compares.
If there is anyone with an Asian culinary background that is willing to post and share a recipe for this sauce, I would truly appreciate it if they could post it here.
Thank you &amp; kind regards in advance.

Mark
You're only going to get an approximate answer to this because there isn't "one sauce" that is sweet and sour, even in Vancouver.  Instead, there are multiple sauces that fit that description, having both acid and sugar in them.  Common ingredients include any of white sugar, brown sugar, honey, vinegar (of several kinds), soy sauce, lemon juice, plum puree, ginger, ketchup, various sour fruits, and spices.

This blog has multiple recipes for sweet-and-sour sauces from Sichuan, which might suit what you're looking for.