Mchawala said: "By the end, they weren't going to be on Masterchef, but they gained a bit more confidence and were a bit more open to trying."
"Ayen's Cooking School for African Men," released last year, was Mchawala's first film and throughout the making he continued working in two jobs, as a laborer and a barman.
He has since made a film called "Barefoot in Ethiopia," about an Australian brother and sister traveling to Ethiopia.
He also takes part in the "Big Stories, Small Towns" project, in which film-makers work residencies in small towns. The project won a community interactive award at South by South West 2012.