Mumbai, June 13 -- It's been quite a remarkable journey for Asma Khan who grew up in Kolkata and worked as a journalist for a leading media organisation before moving to London with her husband. A self-taught home cook, she started putting together pop-ups around London, serving the food of her youth from her time in Kolkata. Soon, her pop-ups became so popular that she established a full-time restaurant, Darjeeling Express, and employed an all-woman kitchen made up of housewives like herself. Rave reviews from the likes of London's top restaurant critic Fay Maschler meant the awards and customers started pouring in. But her transition to celebrity chef really happened last year, when an episode on her career was featured on Netflix's popular show Chef's Table. And, as a validation of this, earlier this week, Asma was invited to cook at London's second most famous address, 10 Downing Street, for its Eid celebrations. And no surprises that the Kolkata girl served up some piping hot and fiery Calcutta kati rolls, chaat and phulki for the august gathering....