India Dealbook: Charcoal Biryani, Aarav Unmanned Systems raise funding Bhawna Gupta February 24, 2016 PremiumQuick-services restaurant (QSR) firm Charcoal Biryani and Drone technology start-up Aarav Unmanned Systems have raised an undisclosed amount of funding in two different deals. Continue reading this story with a subscription to DealStreetAsia. Subscribe Already a subscriber? Log in Should your colleagues be reading this article too? Contact us for corporate subscriptions at email@example.com.