The coal-fired tandoor oven sends a mouth-watering scent wafting through the Mumbai kitchen as celebrity chef Saransh Goila, maker of the world's "best butter chicken" according to MasterChef Australia, takes a break from Covid-19 relief efforts and resumes work. Although the pandemic has done little to slow the global appetite for his delivery-only signature dish, business has been the last thing on his mind of late with India battling a brutal second wave of infections. IMAGES AND SOUNDBITES