Tempeh & bitter gourd in black bean sauce

Ever wondered what’s in a store bought black bean sauce? Turned the jar and read the ingredients?  What makes it so savoury, so fragrant, so delicious when it’s from the restaurant / takeaway.. but.. so… hmmmm.. bland(?) when you buy a jar of sauce from the local hypermarket? Well, the main ingredient in your jarred black … More Tempeh & bitter gourd in black bean sauce