Made this after having a TA madras from a new local restaurant. Their dish used pre-cooked chicken. I used pre-cooked chicken tikka. The recipe is essentially Chewy's madras sauce, with a mango and black pepper twist.
Chopped onion and green pepper:

Just fresh garlic paste for me, no ginger. Mix powder and MDH Kashmiri Mirch added. No tomato paste yet, and there is no food colouring in this dish:

Lemon dressing and diluted tomato paste added. Chicken tikka mixed in together with a good pinch of freshly milled black pepper.

Canned mango pulp. First time I've tried this stuff. Very nice by itself. Tastes a bit like apricot, I thought. Not overly sweet:

Half of the base gravy added plus 2 cs of mango pulp. Really high heat next for the reduction. It will catch on the bottom of the pan. Good!

About ready
A very tasty saucy madras is this. A bit different, but I like it.

Another restaurant quality dish, made at home, thanks to the forum.
Rob

More on mango including a pic of the madras from the restaurant:
https://curry-recipes.co.uk/curry/index.php/topic,12163.0.html