One of my favorite Chinese restaurants makes this (fermented I think?) bean sauce specific to a single red snapper dish on their menu, and I wish they'd sell it by the gallon cuz that stuff is fucking incredible.
Couple different kinds of bean bao that hit pretty hard, too.
Doesn't look like the picture - it's smooth/pasty, dark red/brown. Mostly umani, little salty. Not sweet, no spicy. I don't think there's any chili oil - doesn't seem to separate like oil sauces do... then again, it might not stay on the plate long enough to separate even if it was going to!