Cardoz, 59, died of COVID-19 infection in a hospital in New York, the sources said.
He was the co-owner of two popular restaurants in Mumbai -- Bombay Canteen and O Pedro -- and had recently launched his third venture, the Bombay Sweet Shop.
Cardoz had been in Mumbai, where he was born, till March 8 and had informed on social media on March 18 that he had admitted himself to hospital in New York, where he lived, as he felt feverish.
He had trained as a biochemist before he discovered his real passion -- in a restaurant kitchen and had moved to New York after attending culinary school in Switzerland.