There was a T/A I used in the late 80's early 90's that did a Keema Royale which was a sort of Keema/Bhuna/Dopiaza with minced meat, peppers, onions, peas and was garnished with a quartered boiled egg, very nice it was too. Just try a sliced boiled egg as a garnish for a biriani or any curry for that matter, absolutely delicious. Hope this helps.
CoR