2 hours ago, scott123 said:
I could be wrong, but I don't think restaurants are pickling
Well, they certainly are here in China. Most larger retaurants catering for weddings, banquets etc make their own paocai. What happens elsewhere, I don't know.
This plate of pickles was served at just such a restaurant here 10 years ago, as documented in this post.
One of my regular haunts only has five tables and also makes all its own pickles. My neighbours make their own pickles.