recipe source: Vegetables by Sophie Grigson
notes: this was lovely. We all enjoyed the taste and the texture of the sweet potatoes was great - not too mushy. I did make my own black bean sauce (fermented black beans, soy sauce, rice wine, etc) as I didn't have any pre-made in the house, but I can't imagine that would make it much different in terms of taste. Yes, I know, it does say something about me that I have the ingredients for black bean sauce in my cupboard but no pre-made sauce!