Interesting George. What do you think would give the ones you like that earthy / smoky taste? Black Cardamom would be the spice I'd imagine for that, but I don't see it in this recipe.
Note for next time. Use way less water. In general, Chef Din's stated amounts on the ingredient list do not appear to correlate to the video images of the quantities actually going into the pans, and I've ended up with a soup that will require a hell of a lot of reduction. I didn't even add the full amount of water to either the lentils or the actual dish pot because I just knew it was too much by looking at it. Tastes ok though, so I just hope the chicken doesn't disintegrate while I reduce the sauce.
Edit: This is very tasty, and I made it mild (for Mrs L). I used Kashmiri Chilli Powder and extra Paprika, but it certainly would cope with a bit of extra heat. The sweet and sour balance is very good. After 30 minutes of slow simmer and constant stirring in the final stage it reduced down to a good sauce consistency. Another dish I'll be doing again. Not fast BIR but worth the effort.